Tires and Rim size suggestion for track.

[C-unit]

I am asking it regarding my R32 GTS-t. I know it is not a 240 or Z but they are pretty similar IMO..beside, most Skyline here are hardparker and don't track their car. So here is my question:

Beside the flush looking factor, How do you determine what size tires and wheels to run. Car is for drifting and autoX. Cars currently has Tein Monoflex and 300whp.

Here is my wheel size I am planning to use:
Front 17x10 +18 245/40R17
Rear 17x10.5 +15 OR 18x10.5 +15 255/40R17 or 265/35R18

Any suggestions?

[Teambadrun]

You cant fit big wheels on R32's


just get 17x9 , 18x9.5

offset depending on your camber and tyre/gaurd choice.

But that is the ideal size, for ultimate handling and steering response.

[C-unit]

because I have 30mm front fender and 20mm rear.

[slider2828]

Running non staggered is really going to kill any sort of rotation into the turn and hence have really a lot of understeer. Depends also how you tune the attesa system on your car.

R32's and S chassis' are really different mainly due to weight, but I would probably do 235 and 255's to get a feel. But get good tires, probably I would really suggest Dunlop Direzza Z1 Star Spec. Probably the best out there and not too expensive. 300WHP, although you probably have some torque, I think good 255's are fine in the rear......

Now if you get shitty tires, then no matter what size you get, you still ain't going to get grip. Try to also stabilize your temperature around 40 PSI hot, which is probably close to 35 in the rear and 36 in the front. Probably colder in Vancouver so tires won't very that much. On a hot day, you can see +6 to +8 PSI increase. Keep checking tire temps. 2PSI makes a huge difference in grip. More PSI more grip..... in general

[brokeAs240sx]

Originally Posted by C-unit

Beside the flush looking factor, How do you determine what size tires and wheels to run.

You run as much as you can, lol.

Generally, the less flush (i.e. make the offset a lil higher), the more tire you can run until you start hitting the inside of the wheel well/coilover/whatever.

A lot of it breaks down into personal preference. Some drivers prefer the lightest weight & most "response feeling", so they'll go w/ a smaller tire. Some drivers want the most tire they can fit under the fender w/o rubbing or w/ a lil rubbing, so they get the widest they can put in.

You have plenty of power & it sounds like you have plenty of room to fit the tires you want, so go at it. If you are going to run 18's in the back, I'd run 255/40R17 up front just to keep the relative tire stretch/fitment/response the same.

Get a sticky tire & you'll be fine.

Since you are asking this question, I'm guessing you are relatively new to the autox/drift thingy. At least for autox, the easiest thing to do is find out what your competition is running - most of the guys (at least the top ones) have gone through many many iterations of tire brands & sizings. That should give you a good start.

[zugoi]

Originally Posted by slider2828

. More PSI more grip..... in general

Thats not true at all. If anything its the other way around. Each tire requires certain psi for optimal grip. Putting more air in doesnt mean it will grip better. In general lowering psi means more grip, for example if your in the snow. When you put a shitton of air in the tire it would be easier to brake loose the tires since your tires are more rounded and your riding on the center of your tires which also equals less rubber on pavement.

[C-unit]

Originally Posted by brokeAs240sx

You run as much as you can, lol.

Generally, the less flush (i.e. make the offset a lil higher), the more tire you can run until you start hitting the inside of the wheel well/coilover/whatever.

A lot of it breaks down into personal preference. Some drivers prefer the lightest weight & most "response feeling", so they'll go w/ a smaller tire. Some drivers want the most tire they can fit under the fender w/o rubbing or w/ a lil rubbing, so they get the widest they can put in.

You have plenty of power & it sounds like you have plenty of room to fit the tires you want, so go at it. If you are going to run 18's in the back, I'd run 255/40R17 up front just to keep the relative tire stretch/fitment/response the same.

Get a sticky tire & you'll be fine.

Since you are asking this question, I'm guessing you are relatively new to the autox/drift thingy. At least for autox, the easiest thing to do is find out what your competition is running - most of the guys (at least the top ones) have gone through many many iterations of tire brands & sizings. That should give you a good start.

Thanks for the responds. I am into the car scene for along time but my car is mostly for street use with retarded sizing which is no good for any motorsport. I asked this question because most of the local drift guys just slap on used tires on stockie and just drift it. I am sure there are specific set up regarding on tires size and rim size but no one locally seems to give a damn about it.

Also, is it better to run 17s at the back due to the weight saving???

[brokeAs240sx]

Originally Posted by C-unit

Also, is it better to run 17s at the back due to the weight saving???

Honestly, if you are just getting started into autox/drifting, it doesn't really matter - the weight savings aren't going to make a difference in your overall ranking for now (and probably for a couple years or so at least).

Breaks down again mainly to personal preference/budget.

17s: cheaper cost, usually lower weight (meaning quicker acceleration as well)

18s: wider selection & sizing of tires, typically stiffer/shorter sidewall

I personally run 17's all around since it costs about $40-80 less per tire compared to 18's.

Overall, you'll most likely turn the same lap times w/in hundredths or even thousandths of a second in autox regardless of if you ran a 255/40R17 in back or 265/35R18 in back w/ the same tire.

You probably haven't found anyone knowledgeable locally because you hang out in the wrong crowd. Go to a local autox or road racing event, there should be plenty of knowledgeable ppl there. The more experienced local drifters should be plenty knowledgeable as well.

Your current setup is fine for the most part. You may end up going bigger or smaller slightly, but that's part of the experience as you get better.

Run a decent tire (i.e. RE11, RE-01r, XS, Z1 Star Spec, RS-3, etc) and you'll be fine. Shoot, you could even start in your "retarded street setup" and be fine.

Shoot, I've autox'd in mismatched all seasons in a stock automatic Sentra GXE & learned quite a bit of stuff.