s2000Junky

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"
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What rim setup are u running in the front?
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Started as the convex 8.5" +40. Added 1.5" to inside for a 10" +58. This allows for optimum 255 profile/fitment and a BBK fitment, if I ever run one.

riceball777

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?
[/quote]

Started as the convex 8.5" +40. Added 1.5" to inside for a 10" +58. This allows for optimum 255 profile/fitment and a BBK fitment, if I ever run one.
[/quote]

Does the 17x10+58 run on the lower upper control arm when the steering is at full lock? I ask because my oem ap2 rims which are 17x8.5+65 almost rub on the front upper control arm at full lock. It's like a few mm from rubbing.

s2000Junky

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?
[/quote]

Started as the convex 8.5" +40. Added 1.5" to inside for a 10" +58. This allows for optimum 255 profile/fitment and a BBK fitment, if I ever run one.
[/quote]

Does the 17x10+58 run on the lower upper control arm when the steering is at full lock? I ask because my oem ap2 rims which are 17x8.5+65 almost rub on the front upper control arm at full lock. It's like a few mm from rubbing.
[/quote]

No, I actually just touch the lower control arm at full lock on one side and about 1mm away on the other with the car up in the air, no issue on the ground. Your cars ride height and alignment both play a sizable factor in this. The car actually increases clearance on the lower control arms as you lower the suspension, and the upper I have no issue at any hight it appears.

DaGou

The seriousness of the event does not increase the risk. The risk is whatever it is independent of the consequences. A wheel failure "could" mean a very serious accident but does not dictate that a wheel failure would be a serious accident. Risk assessment is the determination of quantitative or qualitative value of risk related to a concrete situation and a recognized threat (also called hazard). Quantitative risk assessment requires calculations of two components of risk (R):, the magnitude of the potential loss (L), and the probability (p) that the loss will occur. Acceptable risk is a risk that is understood and tolerated usually because the cost or difficulty of implementing an effective countermeasure for the associated vulnerability exceeds the expectation of loss.[1]

If s2000junky has been running this set up for years with no failures nor has anyone on this site recall a failure of this type I would have to say it is an acceptable risk to run this motherf@#ker steam roller meatosaurus.

s2000Junky

CrackerMacker

Where did you go to get your ap2 wheels widened? Was it in the LA area?

How wide can you go with ap2 wheels (w/25mm spacers) upfront?

riceball777

Where did you go to get your ap2 wheels widened? Was it in the LA area?

How wide can you go with ap2 wheels (w/25mm spacers) upfront?
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http://ericvaughnmachine.com

That's the place. It's in Monrovia ca. So yes it's in the Los angeles area. You car widen any wheel as wide as you want. But with stock oem front and rear s2000 rolled fenders max size up front is about 17x10+55 and 11.5+63 for the rear. If you want to go wider then you will need to space the wider rims farther out and run wide/ over fenders.

CrackerMacker

Ok so if stock fronts are 7"+55, going to 10" would move the offset up 76mm to +131 right? So technically you can add another 25mm to widen the wheel to 11" and put on a 25 mm spacer and that should fit with rolled fenders right?

grubinski

If you add 3" (76mm) to the inside of the wheel, you increase the *backspacing* by 76mm, but you only increase the *offset* by half that, or 38mm. This is because you've moved the wheel centerline 38mm further inboard, and *offset* is the distance between the mounting surface and the wheel centerline, *not* the the mounting surface and the inboard rim edge.

CrackerMacker

If you add 3" (76mm) to the inside of the wheel, you increase the *backspacing* by 76mm, but you only increase the *offset* by half that, or 38mm. This is because you've moved the wheel centerline 38mm further inboard, and *offset* is the distance between the mounting surface and the wheel centerline, *not* the the mounting surface and the inboard rim edge.
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That's an interesting point. So from what you are saying, when the wheel is widened, the cut is done on +38mm side of the centerline (0mm), and not right at the centerline? Or does not matter where the cut is?

edit: nm i think i get it

So the correct number would 10" +93. How about the second question about going 11" wide and having a 25mm wheel spacer and rolled fenders? Will that work?