Lmao. That's gold.

I thought you were serious for a minute, but no one could possibly think that

🎈😂

"test protocol" let's get serious about tyre pressure😅😂

LOL

when you realise that most od this is irrlelvant unless you are either hunting for the best performance, wether if its time of cost. So many factors play a role where the calculated pressure will tople over when one thing is not right. Tirepressure rises the hotter the wheels get, this is dependant on how hot the road is (maybe it's even raining). And different surfaces in different times of the day heat up at different speeds, there could also be trees casting shade on the ground. You don't have to consider all this when you're going to meet up some friends on your bike

@@Daniel-dj7fh the point was spec pressure on swingarm is not always correct. I can confirm on my bike atleast. 25 psi is written for front which makes the tyre be easily pressed by foot and engine braking is so high in first two gears. I live where I always encounter stop and go traffic and 28psi does better job, ofcourse when the tyre is cold.

@@Daniel-dj7fh I have plenty of personal experience saying that if you ride 36/42 in cold weather you will crash, especially if you have to make evasive maneuvers (turning braking) or like to take turns nearer the speed limit than half of it. I ride 28 psi in cold weather, 32 in cool, 35 in warm and 42/38 in hot. And I get better traction on hot days than the cold days, no matter what the psi.

@@MultiPleaser what do u ride mate???

@@annabanna666 YZF600r, cbr600f1, fzr400, kz650. They all had the same problem in the cold.

Thanks Jordan. Really appreciate you taking the time to create a testimonial on me as a person, friend, fellow racer and mentor. Thank you ! You and family are missed at the track for sure.

I learned a lot about tires today.

That's when your riding becomes better, and you become more confident with what your tires are doing. Also it helps you keep your focus on the road and your riding, makes you more aware of your environment and hopefully help you avoid becoming a statistic ... when you are riding confidently, you enjoy the ride. Ps.: not talking at you. Just sharing my opinion. Ride safe, enjoy!

Sounds like you need to get out and ride more often.

It was summer when I started testing, it was winter before I finished.

Keep a log book of the data you collected, then you have a head start on your starting point….

😂

Ikr

? not hard to convert haha

There are many conversion calculators online. You can just do a quick conversion, instead of complaining on here.

@@fgjf1079 complain?

Not a conplain ddmc

Wow, thank you

So it's simply what feels good. 😆

This is a great sentiment and I thoroughly agree. Well done Dave.

Race tyres are hard …

I don’t think this was clear from the start. Why when all manufacturers spend time and money on testing to find the ideal compromise pressures, and the front is always less than the rear, has Dave Moss used equal pressures front and rear? The rest of the information is based on this anomaly and is like a house built without proper foundations. I would prefer to rely on the manufacturer’s settings as a baseline, not these rather arbitrary figures presented here.

@@markpearce5793 Seconded.

I'd give 5 stars but he didn't convert "tire" to "tyre"

Easy ((°F - 32) x 5) / 9 = °C ex. ((70°F - 32) x 5) / 9 = 21°C

dammit...... next time

@@BangFarang1 "easy"

@@BangFarang1 Even more simple for a "close enough" estimate: F to C: subtract 30 and divide by two. C to F: double and add thirty.

I brought an old bike (new to me) to a track day and it felt really bad. A guy was there doing suspension tuning for $70. Unreal difference before and after. Suddenly the bike felt stable after tip-in on slow turns, held lines properly on fast turns/sweepers, and acted much more predictably. $70 did more for that bike than any performance upgrade I can imagine except maybe fresh high-end brake pads or better tires.

I am always humbled by riders that take DMT content to heart and step up to make a difference with their motorcycle. Thank you for watching and using the content to good effect!

i know a backhanded compliment when i see one 😂

Get some tires with softer compound and thread pattern that can dissipate water efficiently.

Buy a rear mudguard to avoid getting a rusty craic.

LOL!!! Thanks

Even at age 5Seven I Still ask Why???

Lubricate you tires regularly, or you could opt for an oil dripper just under the water fender (if there are newbees out there, that's a JOKE ! Don't do that for God's sake !)

That is true - thank for being diligent!

The most important is not your gauge going out, the most important is using the same jauge. If your best setup is 43 psi using YOUR gauge, whatever the other ones, your gauge knows your perfect setup

@@CaptainDangeaxexactly, same as in tuning in music.😒

Great call!! Couldn't have thought of this to save my life yet reading what you wrote brings me back to an "unpleasant" group of memories! Now older & many miles later, until reading this, If I were discussing tire pressure with s.one with less experience, I wouldn't have mentioned the importance of a quality t.p. gauge! while I've incorporated into every day life/ride, My first 2,3 seasons, I depended upon the "automated" air @ gas stations & the variations between those machines is "immense" to say the absolute least! I need reminders like this. Ty!

@@brianobrian6637 You are very much Welcome Sir. As we all do need reminders like this myself included, because we do forget things Brian. Especially on what seems like not even a second thought about. Sometimes it Truely is the lil things. Happy to have helped friend.

@@brianobrian6637 Last time I went to a gas station it was indicating low, let too much air out the front and the back became as good as flat due to a bad seal... Had to ride to the next pump where I knew they had an old school analog meter with a let off button. Scariest ride of my life, mopping the road as if I was drunk, or so it felt.

28 rear front 30 ?

@@Daot888front tire is always lower on motorcycle to help with steering. Prevents slip

MEANWHILE YOUR WIFE'S LOAD RATING IS 100 DUDES... PER HOUR

this is for people riding twisties, not for people like you speeding on a straight line and thinking thats biking

Cringe. Honey, they're both biking. Go to a drag strip and tell everyone they're not riding bikes, you might get back to your car fast enough to avoid a slap for being a 💩 for 🧠s

Dude, if you didn't know this for the last ten years then you are one sad mofo!

Bang on!

Always able to help via email or 1-1 video using my Remote Tuning service. If you would like to review this please email me dave@davemosstuning.com

Thank you for being open to some new information and leveraging the opportunity Geoff. Really appreciate it.

My pleasure Dave. I'll give your video a plug in our next IAM newsletter. I did so on my blog after your suspension clinic: geoffjames.blogspot.com/2018/03/a-most-excellent-week.html .

Hence my Trademark: Feed your brain, love your bike more!

@@catalystreactionsbw How much higher psi should I ride if I want the bike to be flicable? I have a "17 cbr 1000rr

@UCmWWXzwZZB_-wbsbNUhz4zA depends on the carcass: kzfaq.info/get/bejne/bZiHobJ43b6Vfas.html

Dave, why is the front tyre pressure the same as the rear? Or do you drop this but just didn’t mention it.

Only if you don’t own a Honda then if you do you can just throw your leg over and ride all you want and not break just do maintenance, tires, and your good! I would rather own a used Honda then a new harley and I love Harley’s but I love riding and money more two things which you have to give up to own a harley 😂

I sincerely appreciate you being aware and thinking critically. Thank you for the kind words and enjoying all the content there is on this channel!

Ride to your known road, start with high cold pressures and reduce hot pressures in 2psi increment over a 4 miles section. 30 minutes tops and you are done.

Then buy the same set and now you know. You're acting like riding is a chore...if it's a chore then you should probably just bang on with your car

@Dave moss tuning I did notice that you didn't discuss differences between front and rear and the effect of changing one independently of the other, or did I miss that? Apologies if so. Informative though, thanks.

Because they are always listening.. happens to me too

Proof positive huh.....

On my '22 Yamaha Tracer 7 I should add 36psi on the rear and 33psi on the front, following the manual that is, need some explanation here please 😊

Thank you for wanting to learn more and elevate the experiences with your motorcycle to a higher level! I sincerely appreciate you paying it forward.

@LastRaven Thanks for the correction. Considering our community guidelines its not the response i wanted to send. "Get it right" ok hotshot you can fly away now raven.🇺🇸

@LastRaven sounds to me like 'bimmer' is what folk in the USA would say, whereas 'beemer' would be more of a UK-based nickname for a BMW. Anyone correct me on this if I'm mistaken please - I'm not a native English speaker. 😇

Yes! Has a 290 lb rider. The lower pressures are a joke. Sure I burn them out quicker. But the improve handling massively

@@dsiz9421 hit the gym. Ul feel better on bike

​@pmacc3557 what's the gym got to do with anything? If you want to lose weight you just eat less, you can't out exercise a bad diet.

@@DrewLSsix I think the point is that the dude is a fat f**k and tire pressures are not state with him in mind.

It's not only about weight, also has to do with stamina and physical strength to be responsive, specially in long journeys

🤦

over complicated for you maybe

Maybe so, but Dave's channel is about the technical details of motorcycle handling. I doubt a noob rider will spend much time here, but for those of us with a higher level of riding experience it's very interesting. 😎

You think this is over complicated?? Maybe you're acting like a noob..

Great share and thank you so much for taking the time to type this out! Yes, you can go with manufacturer's recommended to start -2psi cold (also remember cold dense air measures a lot less). Gain on a road ride would be ideal at +3 or +4 over your starting cold pressure. That being said, realize/rationalize that the front tire is always in cold air so you may see 2-3 gain. Hope this helps!

Many thanks!

Yeah I’ve never filled my past 36 42 seems so incredibly high to me 😂

@@alexduey7868 Really heavy bikes with squishy suspension can run 39 front, 42 rear, but those are special cases. Lower pressures on heavy bikes cause the front tire especially to cup. I have a Super Tenere which qualifies as heavy and squishy, it never sees more than a dirt road and I actually do run 39 front and 42 rear on that whale 😆

That's about what I run on my 2015 BMW RT, 40-42 psi on Michelin Road GT-6 tires. My bike weighs over 600 pounds. Lower pressure in front will cup the tire .

@@alexduey7868 I have a GSX-S750 and those are the Factory recommended for that bike. But would not run it otherwise. I always do factory recommended. I'm 175lbs

​@spartanx169x I've always run 36f/42r on my bikes, had plenty of different litre bikes and 600 supersports. Just recently though, after getting a k6 gixxer 1000, I ran 36/42 and the bike felt so twitchy and unstable, especially when I had it leaned over, it just didn't feel right, not like my previous s1000rr or 09 cbr1000. Decided to try 36/36 on it and it felt so much better even though they recommend 36/42 on the swing arm. Tyres are metzeller m9rr which are the same tyres I ran on my s1000rr. That's what I found worked for me anyway, although 36/42 was OK for one bike it definitely didn't feel good on another. It could definitely come to different riding styles or different bike attributes, I think it's always a good idea to try and see what you like or what the bike likes

Thanks for sharing your experience and results!

Thanks for subscribing Warren. I am sure you will find some great basic information here on sag, compression and rebound along with tyre pressures to get you started.

I have a similar bike (BKing) and if I dont have at least 2.4 in my rear I start to pump like crazy at hard accel out of the curve.Guess you aint riding it to the limit?I take a controlled side over a stop and go pumping anytime.

Did you set the suspension up especially with rebound damping? That might be the cause vs tire pressure and sidewall flex?

@@catalystreactionsbw Yes its clearly getting the grip then flexes then loosing it then getting it again.With more pressure its slides controllably def not a suspension issue.I do have a 240 on tho.

Thank you, useful

I appreciate your kind thoughts and support! Thank you.

I'd take a class if he'd do the lectures!!

Planning a tour of the US once C19 regs loosen up.

@@tbillyjoeroth Absolutely I shall be there...

@@catalystreactionsbw that 'll be Lovely...

Thank you for the compliment. trying to help as many riders as possible have a great handling bike that will perform well in a crisis to improve the end result and avoid an accident.

I would guess he is talking for track purposes. I weigh 175lbs 5 ft9 and always run manufacturer recommend pressures and every one of my bikes(I've 15 bikes now) perform flawlessly ON THE STREET. Him nor anybody else can convince me to do otherwise for street riding at speeds under 100MPH.

@@spartanx169x Dave normally does more track focused content, but he's talking about his daily driver bike with cases, testing on the street, etc. My guess is that the standard is set because it _does_ work for most every bike in normal conditions, but the FJR especially is notorious for having issues handling the front since it's much more tuned for touring than sporty riding. I'm by no means advocating that everyone NEEDS to change from the standard pressures, but IF you're having issues (like me), this is very valuable knowledge.

That is what Kawasaki recommends for the W650...its no sports-bike though .

Thanks 👍

@@catalystreactionsbwno

Not that hard though

That’s Right

Me too

Thank you very much for sharing your experience and helping others realize a little work can pay some huge dividends!

Thanks for sharing as that can inspire and help hundreds of riders at least!

Ride to master your tire pressure on the bike

Exactly how I found my Triumphs were so sensitive to low front tire pressures! Leaky tubes! 👍

@jeffrosamson I'm sure he knows it's the metric system !! He is just making a statement about liability.

@jeffrosamson you're completely missing the point. Also, bar isn't an SI unit, there's nothing important about it, not need to get on your high horse.

If you crash your insurance company will look for any excuse not to pay. Tires not being at recommended pressure could well be one...

Sticker on a 2009 vs manufacturer pressure on S21. Which one is correct for the investigating Officer or adjuster? I'd argue the Bridgestone number.

@@catalystreactionsbw oh I don't disagree at all... The default should be the most up to date ie the tyre, and I'm sure it would be very unusual but I've known companies be like this. Top content by the way!

Heavy bikes, higher pressures. Watch this video to give you a little more background: kzfaq.info/get/bejne/bZiHobJ43b6Vfas.html

@@catalystreactionsbw Watched the vid...it does not address tire pressure at all nor the difference between front & rear tire pressure??!! Better check your link Dave....

B Barnett front tire needs to squat n spread under breaking and due to size a lower tire pressure compensates for smaller contact patch vs a rear

Start with recommended and then even them up. Does the bike overall ride better? If so, go 2 psi higher and test 4psi lower than the original test number.

@@catalystreactionsbw Dave should front and back be the same pressure? I always thought the rear should be a few psi higher than the front.

@@jamesnorth7318 It can be several or the same. I never carry a passenger or a load on my street bikes so I run pressures the same. I came to that disposition after testing different pressures to see if my motorcycle handled better and it did. Sam scenario with changing pressures every week when I commuted. Got 3,000 miles more out of the tyres. I find it interesting to challenge sticker information and apply critical thinking especially when the gains are all positive and put $$ in my pocket.

If you do that, you will save $$ hundreds and optimize grip AND longevity. Well worth it for next season as then you have your reference points for those tires for the future!

@@catalystreactionsbw What are your thoughts on the Bridgestone R11's for a 600cc? Tyre life versus traction levels etc and can they be used without a set of warmers?

@@KR4Z3D666 modern track tires have much the same grip levels - set up is critical to get the maximum out of them, as are tire warmers. You would need 2-3 laps to warm then up outside of Summer.

It would be even more relevant for a motorcycle 😒

Very much so as we all ride differently based on experience, knowledge and speed/enjoyment factor.

So I ended up back here again. YT made me look, and I still find the topic intriguing. Now, I am a bit older, and I´ve been riding a bit more - so now I have some new thoughts for y´all... However, I would not diminish Dave´s work, because he is obviously right in everything he teaches. The only thing I would comment, is that 99% of us have little use of this talk about tire pressure. Most of us would be better off paying attention to his suspension classes though, because most of our sins lie there. Now, I was going to make this all about tire pressures, but I had some other thoughts. Dave, as a racing mechanic of course knows every tiny comma there is to know about the subject. I Strongly recommend setting your bike up according to his elaborate instructions over IDK how many videos, there are literally tons of them. Choose either one. However, having done that - tire pressure is just the Icing on the cake. Dave needs to know, because of the races. You and I don´t, because we ride in different conditions every week. The main thing for us, is to know how our bikes handles, and adjust our ride accordingly. We don´t have a racing team to tweak every bit of the bike, or the precise measurements of tire-, asphalt, and air temperature for every single ride. What we need to do is find the middle ground which fits the majority of our rides the best, and go with that. Then we ride well within our limits, and feel a lot better about it, because we got all these great tips from Dave that made our bike fit our needs better. To sum it up, if you want the best experience from your ride, which is what I personally aim for; Set up your bike ergonomically, then trim your suspension. If you then find your tires lacking, try out these tips. And I think this is always true. A bike that does not fit you ergonomically, will always put you off your end goal, whether it is a smooth ride, or the fastest lap time. The suspension is the most important for a smooth ride across difficult roads, and even more important if you want good lap times. But don´t think it doesn´t matter at slower speeds too. Your weight is a huge factor in this, considering the relatively low weight of the bike itself. Finally, you can tweak tire pressuse as you want, either for longevity or to maximise grip. Higher pressures (up to a point) increases longevity, while lower pressures increases grip (also to a point). You should never just "drop half a bar" on a track day just because someone else said so. Your tire might warm up faster or slower - you might be heavier or lighter, and the tire compound might vary a lot from your friend´s, so test it out slowly. Get to know your limitations, then vary one thing at a time. Change your preload a bit, ride 3 laps. Change tire pressure front, ride another 3 - and so on...

Me too. This video amounts to; "Try some different pressures and see which feels better."

Well said John. Thank you.

No, SCIENTIFIC trial - only, not error. There should be NO error. An unsuccessful experimental trial is a failure, not an error.

@@johnc8910 It's maybe an experience too !

You've got the attention span of a goldfish, seek medical attention asap.

@@keaponlaffin6737 🤣🤣🤣 Maybe his goldfish is very attentive??

Thank you very much.We all start at the beginning so i try to keep that in mind when I create content.

I think it is safe to assume that even if the manufacturer pressure recommendations are not exactly accurate for all use cases and modern tires, the ratio between front and rear is still relatively accurate. At the very least it is a good starting point. 🤔

Machine or tire shops with air lines have regulated pressures. They may even have a test port so you can see what you gauge shows vs known pressures. I test mine every 4 months due to so much track work where pressures are critical and 1.5 psi can be the difference between great wear and a hot mess.

Thanks for saying that. Some people like to skew statistics and mess shit up.. .. nice bike by the way 😀

You are funny. Look into this again. What you said and what he said are very different things. Dude you are kindergarten wrong. It's funny.

My tired test show different results for different bikes. 29psi front is to low on my Aprilla has the front slides with pirelli diablo corsa tiers . But 32 is fine, the BMW likes it above that 38 psi in the front less it slides.

You are right about pressure is a consistent no matter what temperature it is. However, One thing you missed is: the physical properties of rubber changes dramatically based on temperature, a tire with 27.5 PSI will deform and grip differently under the same force (cornering speed) but different temp. The point of adjusting tire pressure according to temperature is to compensate this physical change introduced by temp delta and achieve consistent tire performance.

Totally agree. As the tire warm up due to flexing the pressure goes up. At that point you may need to lower pressure. That is impractical therefore we have a range. The pressure needs to be within the range when you start and when you finish the ride. Working on aircraft that just landed the tire pressure was about 30-40 psi higher than nominal (190 psi). One had to wait at least four hours before checking tire pressure. Also working in Miami we always had to lower the pressure as it was too high if the tire was serviced in the winter in northern climate. Also some tires are sensitive to pressure where a few psi makes a drastic change in grip. Case in point was a Michelin on the track. I could feel a 2 psi change in grip. Stoped using them due to that as the tire was too soft at the beginning and greasy at the end of a track session.

Thank you for your diligence and sharing the data you have acquired!