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Widest wheel/tire combo possible...........

p-zero corsa ..wow ..its what i have to say ..i have a 996 with them on for track use ..and they are awsome...tread wear is 60 but the do the job on the track ..i recommend them very much so just a little expensive..:D
 
Upon further review... 235/40 will work on 17's, provided that the offset is 40, but would most likely need to be shaved. At 235/40 with a 40mm offset they are right at the "C" threshold of 347.5mm.

As far as the P Zero Corsa's at Tire Rack, Alex confirmed that they are available, but he has no specs for them as Pirelli has not provided them with any.

235/40/17 looks like a good choice, but it will eliminate any wheels with more than a 40mm offset. But then, that still leaves the TE-37's. ;)

BTW, if you want a spreadsheet that will calculate the "C" value using the Pythagorean theorem that NSXT spoke of, you can download the simple XLS file I made here.
 
Can you put a 18X10 in the front if you have removed the fender liners? I have a widebody kit that is about 1 1/2" wider than my 18X8.5 in the front. I plan on using a 19X11 in the rear. Also, my car is dropped about 2".
 
I run 235/40-17 front and 285/30-18 rear on the TE37's. The suspension is a Koni/Ebiach combination. If you install the Eibach's you will have some rubbing issues on the track - especially under braking. That's the disadvantage. The advantage is some lower lap times. When I switched to this setup I went from 1:33 to 1:31 (and change) at the end of the first day and noticed my exit speed was around 10mph greater in the fastest corner compared to the "skinnies."
 
Ponyboy said:
When I switched to this setup I went from 1:33 to 1:31 (and change) at the end of the first day and noticed my exit speed was around 10mph greater in the fastest corner compared to the "skinnies."
Click to expand...
I still find it extremely difficult to believe that such differences can be solely attributed to changes in tire size. Were these the same make/model of tire, and did you run both sizes of tire on the same day, in the same weather, with the same amount of gas in the tank, and the same suspension, and no other changes to your car? Because any other such changes can also be responsible for any major impact on lap times and acceleration. As well as the fact that lap times generally improve over the course of an event, and from event to event, as you gain experience with a particular track.
 
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custom made offsets ....i have even been able to run 18x8 225/35/18 fronts and 19x11 rears with 305/25/19 .....youll have to custom make the wheels to run these width and tires or modify the wheels ...
 
Iam running 215-40-17 front and 285-30-18 rear on volk gtc.
Rear offset is 42 not sure on the front. The car is also lowered
w/h&r springs and bilstein shocks (low perch) without any rubbing.
 
I too am looking for the widest tire combo for a new Factor X turbo car with 500 RHP. I got Volk CE28N wheels, 17 x 8 inch fronts, 37mm offset and the rears are 18 x 10.5 with 45 mm offset. For the rears I'll proballly use 285/30-18 because they have the closest to stock diameter (for maximum acceleration) and I'm looking for the widest fronts that will fit without rubbing. I'll have the NSX R suspension that drops the car only about .4 inch.

I am leaning toward the S-03 tires.

Is the 215/40-17 the widest size available for the front?
I can't seem to find some of the other sizes being mentioned.

Any comments on whether I should go with a larger diameter rear tire for asthetic or performance purposes???

Thanks,
Steve
 
I think if you go with 215-40-17 front and 285-30-18 rear in bridgestone SO3 you will be very pleased.
I run this setup and love it. No traction control issues. ;)
 
theWB, Maybe you can tell me then...I've heard of people using Koni-based suspension setups (ie Comptech, Ground Control, etc.) and are stuffing 315/30/18 and 315/25/19 (as tall as 275/35/18s that many others use) out back with no rubbing. In the front, I hear most say 245/40/17s being max for track, and slight rubbing, to 235/40/17 with the perfect offset not rubbing.

However, before I for over all my money in wheels and tires, what would that perfect offset be?

Lets say scenario 1:
Front - 235/40/17 with 17x8. Most estimate an ET of 40.
Rear - 275/35/18 with 18x9. Most estimate ET of 40 as well.
(ie a good set of wheels, maybe superleggeras)

Scenario 2:
Front 235/40/17 with 17x8. Same thing with ET?
Rear 315/30/18 with 18x10.5 What would the ET be here?
(And I'm sure wheels are going to be pricey in this setup...)

Thanks in advance.
Charlie.
 
CarCrazed4Life said:
In the front, I hear most say 245/40/17s being max for track, and slight rubbing, to 235/40/17 with the perfect offset not rubbing.
Click to expand...
Everyone I know who uses 235/40-17 in front reports rubbing, ranging from moderate to severe. Most have removed their fender well liners and live with the possibility of body panels getting damaged from stones/rocks getting kicked up.
 
Late model 17's on my 91??

Hey...I would appreciate some help.

I am buying a set of late model (2004) 17's for my '91 and I'm not sure of the right tire size for the front and rear. What's the ideal tire and size?

Any concerns I should know about?

Thanks,

Jerry
 
Re: Late model 17's on my 91??

I believe the new ones use 215/40/17 up front and 255/40/17 out back. Seeing that a 91 use to have 205/50/15s, that would be close to a 3/4" increase in overal diamater which should be alright. I would say stick with that same combo...

As for tires, I say try the Goodyear Eagle F1 GS-D3...
 
CarCrazed4Life said:
I believe the new ones use 215/40/17 up front and 255/40/17 out back.
Click to expand...
That's correct. Compared with the stock '91-93, these sizes are 3.0 percent larger in front and 0.7 percent larger in the rear. They should work fine.
 
I just read a magazine article where a guy has Eagle F1 DS-D3 245/35/17 up front on 17x8 and 315/35/17 on 17x10.5. And that was no widebody...

Anyone know the article or more about the car?
 
CarCrazed4Life said:
theWB, Maybe you can tell me then...I've heard of people using Koni-based suspension setups (ie Comptech, Ground Control, etc.) and are stuffing 315/30/18 and 315/25/19 (as tall as 275/35/18s that many others use) out back with no rubbing. In the front, I hear most say 245/40/17s being max for track, and slight rubbing, to 235/40/17 with the perfect offset not rubbing.

However, before I for over all my money in wheels and tires, what would that perfect offset be?

Lets say scenario 1:
Front - 235/40/17 with 17x8. Most estimate an ET of 40.
Rear - 275/35/18 with 18x9. Most estimate ET of 40 as well.
(ie a good set of wheels, maybe superleggeras)

Scenario 2:
Front 235/40/17 with 17x8. Same thing with ET?
Rear 315/30/18 with 18x10.5 What would the ET be here?
(And I'm sure wheels are going to be pricey in this setup...)

Thanks in advance.
Charlie.
Click to expand...

Any Updates?
 
RP-Motorsports said:
We are currently working to stuff 315's under 2 different cars. I will update when complete. We still have almost 20mm of room left! :eek:
Click to expand...

:eek: :eek: :eek: :eek:
I'd love to see that! What wheel? I hope they're affordable!
 
RP-Motorsports said:
We are currently working to stuff 315's under 2 different cars. I will update when complete. We still have almost 20mm of room left! :eek:
Click to expand...

I wish I was next to TR :mad:

If 315s get out back, can you tell us the size and offset you find suitable and under what range of suspension travel...

Also, the fronts. Out of 245/35/17s, 225/35/17s, 225/40/17s, and 235/40/17s, what is the maximum suspension travel, wheel travel, etc before we rub or make contact.

Thanks guys.
 

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