Wheels and Tires Discussion about wheels and tires for the S2000.
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Widen rpf1 17x11.5 +63 295/35/17 kumho xs

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Old 10-22-2014, 11:44 AM
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And if you are going with 18's you may as well just buy forgestars since they can make them in these kinds of widths and offsets and the overall price is around the same once you factor in widening the wheels. The tire issue is really the Achilles heal of this setup. With only 1 street tire available you better have some wheels for the street or something as if they don't make this tire in the new run you will forced to go with hoosiers which are not safe for the street and would likely need overfenders.
Old 10-25-2014, 05:59 AM
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Why widen a wheel when a 9.5" +50 or 55 (can't remember which mine is) 18" can be shod with a 275 35 and it fit fine with just a fender roll and rear bumper screw relocate. Shit if I had an 11" wide wheel I would want a 315ish on that bad boy. Oh and my car is lowered. Not that everyone agrees here but I run a 315 on my 10" wide stock wheel for my jeep srt8. Fronts are 9" wide and run a 275 on those.
Old 10-25-2014, 06:29 AM
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Structural integrity would be my only concern with something like this. The wheel would have to be welded absolutely flawlessly for there to be no loss in strength. Unfortunately, a wheel failure could mean a very serious accident, so the risk is pretty high.
Old 10-25-2014, 06:50 AM
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Originally Posted by camuman
Why widen a wheel when a 9.5" +50 or 55 (can't remember which mine is) 18" can be shod with a 275 35 and it fit fine with just a fender roll and rear bumper screw relocate. Shit if I had an 11" wide wheel I would want a 315ish on that bad boy. Oh and my car is lowered. Not that everyone agrees here but I run a 315 on my 10" wide stock wheel for my jeep srt8. Fronts are 9" wide and run a 275 on those.
I am guessing the Jeep has a lot more tire sidewall which makes a difference in acceptable wheel/tire width. The handling characteristics are also very different.

He wants to run a 295 tire which is the limiting factor in fender clearance. You might as well run an 11" or 11.5" wheel to use the tire to it's full capability. We are talking about wheel width/offset down almost to the mm, no off the shelf fitment available. If you were limited by WHEEL width and wanted to pinch the widest tire possible, then that is a different story.
Old 10-25-2014, 07:45 PM
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Originally Posted by RedCelica
do you think that the structural integrity of the wheel has been compromised at all?
I don't think so. I have been rolling on my wided oem ap2 rims for years now with about any issue. Widening and narrowing wheel is actually very common. Lots of the land speed guys run widen/nor reared rims from this guy.
Old 10-25-2014, 07:47 PM
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Originally Posted by s2000Junky
Originally Posted by SlowTeg' timestamp='1413987704' post='23378664
[quote name='RedCelica' timestamp='1413982866' post='23378595']
do you think that the structural integrity of the wheel has been compromised at all?
There is a large debate on this topic. Some people say yes others say no. The obvious concern/problem is you're heating the wheel unevenly and getting it very hot where the welding occurs which could lead to failure.
Anytime someone modifies something outside of the original manufacturing process I suppose there is always the potential of some form of failure, usually with poor craftsmanship. when I had this done originally i went with someone who has been in the business of modifying wheels for motorsports racing for decades, learned about the process and decided it was safe to pull the trigger. Ive been running my widened rpf1 on these 295 for about 6 years now in the back, they have seen a lot of road miles and several track events. I more recently had the fronts done as well to accommodate a 255/big brake offset.

No risk no reward. Cool to see some following in my footsteps and some others considering, not that widening wheels is anything new, but doing it on an S2k with the mentioned tire option, is. Just consider the mentioned reasons for doing this, there is no point if the wheel can be had off the shelf to accommodate an average sized tire that would otherwise fit by other measures. And also consider that this 295 in a 17 may or may not be available in Kuhmos new XS replacement. No other manufacture currently makes a 295/35/17 and the current XS run has been discontinued since 08 with all known replacements now gone off the shelf. The v720 will be your only potential option to run this size tire starting in spring of 2015. so if anyone is considering doing this, wait till then to insure you have a tire.

The better option I think at this point would be to just run 18"
[/quote]

What rim setup are u running in the front?
Old 10-25-2014, 07:50 PM
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Originally Posted by camuman
Why widen a wheel when a 9.5" +50 or 55 (can't remember which mine is) 18" can be shod with a 275 35 and it fit fine with just a fender roll and rear bumper screw relocate. Shit if I had an 11" wide wheel I would want a 315ish on that bad boy. Oh and my car is lowered. Not that everyone agrees here but I run a 315 on my 10" wide stock wheel for my jeep srt8. Fronts are 9" wide and run a 275 on those.
275 tires are common. I'm running 275's now on my 17x10.5 rims. 315 tires can't fit on the stock body with out fender flares. To run 295 tires on the stock body you need the correct size rims and offset down to almost the exact mm or it will either hit the inside or outside fender of the car. No one really makes the correct size rim with the correct size offset for the s2000 to accomplish this.
Old 10-26-2014, 06:15 AM
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That is not true. There is plenty that make them like ccw and forgestar. They just don't make 17's in that size.
Old 10-29-2014, 03:41 PM
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wow do you have a poc of them on your car im curious as to how they fit being soo wide
Old 10-29-2014, 03:58 PM
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Junky's Car with this setup.

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