Generally speaking I have found that going up 1 wheel size from stock size gives a good balance. But really depends on what car it is.

LFA, 993, huayra, AMG GT Blk series, 400R.

My personal pick will always be the Mazda 787B ❤❤❤

I discovered this the first day of playing since the very first car I bought in GT7 was a Sierra Cosworth and it was basically undriveable with the largest wheels and racing suspension. It literally wouldn't turn AT ALL in high speed corners. It took me some time till I finally found out that you either have to increase the ride height or put smaller wheels.

I love straight to the point video 🙌🏻 thank you for the info

I personally love the shelby ac cobra and the alfa giulia tz, just a visceral sound from both of them

Short answer: yes.

The new update feels like straight ass on controller

PP changes after changing the size, that's how you know it does affect it

High profile for the win, now test 17s and 18s and see if there's a middle ground or point of diminishing returns.

You can feel something diffrent wheelsize, realy? 😅 Some cars you feel a bit of everything, some some things no diffrent and the last some cars nothing changed... Only gt sport was more trash. Now after update not so far away... For example a noob car BMW not driveable at the moment, soft braking above 100kmh in a soft curve is like handbrakeing. Nothing to make it away, maybe children help assistent system esp up to maximum... Im done with gran turismo after gt 5...

The fisics on this game is incredible

Dude there’s no way. I LITERALLY just had this idea to test it, and then this popped up!

Mercedes 190 E must be the most driver friendly car there so much in the real world as much on the simulators . Yes , the front engine rear wheel drive setup makes the car prone to oversteer at some point but that's to be expected. Now if that car is fully upgraded , with racing modification which gives you access to downforce , racing suspension, which give you access to ride height , camber angle , Racing slick tires and a fully racing gearbox with edited gear parameters this is a moving dream dream !

🤔 I have a fully built Alpine A110 and I haven't noticed much of a difference between Smaller Wheels vs Bigger wheels. But that could be because of my suspension tuning I use. A lot of people tend to forget that Building a car requires more then just slapping parts on it.

I just got the Ferrari 430 Scuddi and man is that engine and exhaust god tier! The last of the analogue naturally aspersted exotics goes out with a bang!

You should've done this blindly. As it is, this is too subjective, and chances are all your experiences are biased on your expectation that the wheels will perform differently.

Awesome content I'm subscribed thank you

NOTICE: It's worth mentioning that this video is no longer accurate since Update 1.49. If you use upgraded road cars on racing tyres, like the 190 in this video, rescuing a slide on a controller is now almost impossible, no matter what size wheels are on the car. I will wait for PD to release an update fixing all the silly bouncing before I re-test this.

Did that change through Update 1.49?

4 days later physics update kinda makes this irrelevant.

Gotta repeat the test 😅

Smaller wheels give slightly more acceleration larger wheels will bring more top speed.

from my finding I found that when you add max rim size with full customisable suspension, make you leave a gap near the body otherwise on hight speed it will not turn at all they genuinely have thought about the downforce for the speed on a crazy level, also, if the car is twitching adding ballast and biasing it on that side with 1 or 2 sizes down for rim size, it makes a night and day difference

Great video, thank you 🙏 subbed purely for the use of the word plonker. Reminds me of only fools and horses 😂😂 also great content, much appreciated 👍

Of course, the bigger the wheel, the better is the grip in some cars cause it prevents wheelspin. And i already figured out the same setup doesnt work in different tracks, some tracks have more inclination and that s a diferent configuration you need to do, if you want to keep the car with the same performance as it should in other tracks

I know for sure, it effects the PP, so that should also be considered 🎉🎉🎉

Using the stock rear wing helps

Does the Size affects Performance? Wait i ask here ;-)

Do that again due to physics patch Of course imma Joking

So, take 2nd largest size?

Do livery editor online only?

Thank you. I just became a new follower. Liked and subbed.

1:15 definitely missed an opportunity doing the full course bc the 3rd corner after the chicane, the off camber up hill right, tests this perfectly, i have a ford sierra bottom out over and over on that corner specifically, tried stiffening the suspension raising it up problem the wheels are too big😢

Subscribed, learning alot from you . Gt7 is my first gt game ever and i just boiled it this year . Thanks for the tip !

I think it would be better to say rims rather than wheels because the wheel itself doesn't get bigger just the rims are changing. Wheel = Rim + Tire

I noticed this while tuning an Alfa Romeo Giulia GTAm. I changed the standard 19 inch wheels down to 18 inch wheels and the car became way easier to handle.

Rims, wheels size, offset and width all affect car handling

Yes IMO it does, GT is all about detail….

Great video, i play on pad as well and i found that bigger rims felt faster but i never knew for sure since i never tested, i play the le mans event with road cars so it’s at least helpful to know for sure that the bigger rims are faster but more unstable

Nice analysis 👌

Why doing this now that they are releasing an update for physics AND tyres?

Can you adjust the tire width on Gran Turismo seven if so, maybe you should do a separate video on that too

I don't even play Gran Turismo 7 but I still love seeing videos about it.

So you will test this after tomorrow again since the Physics will change

When changing rim size stock brakes stay the same but brake upgrades will change sizes along with rim sizes. So tiny brakes with tiny rims and massive big brake kits on the big rims. I never tested it but I bet u have much better braking with the larger brakes

So well said. Subscribed.