Few more days of driving, TCS light has not come on. Will keep monitoring. Have an autoX coming up. Will report back on how it feels. Still rather mesmerized by the near plush ride quality on such a stiffly sprung and low car.
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Unofficial Big-Wheel Thread: 18/18 and 18/19 - the future for NSX tire sizes
- Thread starter stuntman
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- 18/18 18/19 big wheels
For autoX, do you run SCCA events? class SSM?
No just local events put on by BMWCCA, NE-SVT and the corvette club at an airbase. Fairly long and high speed.
Had to post more of Turbo2Go's 225/40-18 275/35-19 setup from his thread:
http://www.nsxprime.com/forum/showthread.php/186714-FINALLY-Some-good-photos
http://www.nsxprime.com/forum/showthread.php/186714-FINALLY-Some-good-photos
Finally had a pro take photos of my NSX. Hope you guys like...
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Sorry to hog the page
It might be interesting to see what tires come on the new Civic type R that I saw at Magny-Cours.
The wheels were 19" I believe but I couldn't read the tire markings?
Most probably 225/35*19 which is the equivalent to the 225/40*18 mentionned all along.
The engine is quoted at 310 HP...
The wheels were 19" I believe but I couldn't read the tire markings?
Most probably 225/35*19 which is the equivalent to the 225/40*18 mentionned all along.
The engine is quoted at 310 HP...
While the OD of a 225/35-19 is about the same as a 225/40-18, I personally don't think a 19" front wheel would look that good on an NSX, and would probably need a 20" rear to look visually balanced. Plus a big key of the 225/40-18 is to get the sidewall for ride quality and compliance while opening up the door to many current top-level performance tires that aren't available in traditional NSX sizes.
245/35R18 Pirelli P zero up front, a slight trim of the rear seam and I can turn lock to lock with no rubbing. This will require custom fender liners though. Going to swap these with the P Zero Corsa to see if I can still clear.
Looks good!
Sure does... I can never go back to 17/18 now that I have had some thorough experience with performance oriented 18/19 setups. I like just about every part better. Including how it fills the entire wheel well better and that cushy ride...
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Agreed, 100%
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18"/19" FTW.
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18"/19" FTW.
- Joined
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- 54
Merkutio that's not what I meant. what you have there is lower performance than 17/18. If I had to do that I still prefer 17/18. I wouldn't run a 35 series tire up front unless it's a 245+ section width.
I can't go back to 17/18 because I'm loving the pilot super sports. I'm loving it because I have more sidewall not less up front. I'm loving it because I have a plush ride, more ground clearance, low noise, better priced tires, more grip out of the same brand and model, better filling of the wheel well as well as less fender gap without being lower, more rotor space...The looks is just the last thing that adds to it. Unless you're going to step up to a 225/40 and remove the liners, it isn't worth it to me to go up to 18/19.
I can't go back to 17/18 because I'm loving the pilot super sports. I'm loving it because I have more sidewall not less up front. I'm loving it because I have a plush ride, more ground clearance, low noise, better priced tires, more grip out of the same brand and model, better filling of the wheel well as well as less fender gap without being lower, more rotor space...The looks is just the last thing that adds to it. Unless you're going to step up to a 225/40 and remove the liners, it isn't worth it to me to go up to 18/19.
(Sorry OT)
Dave,
I can send you the link to buy the reservoir clamps I use if you'd like. They were not expensive.
Dave,
I can send you the link to buy the reservoir clamps I use if you'd like. They were not expensive.
Sorry...I'm dumb and was at work and I thought you said stock liners...I'm assuming you removed them?
I still have my fender liners.
Correct!
Bigger isn't always better, lol.
http://www.crash.net/f1/news/219829/1/teams-signal-opposition-to-18-inch-wheels.html
Honestly though, this large wheel craze has gotten a little out of hand.
Carry on though.
http://www.crash.net/f1/news/219829/1/teams-signal-opposition-to-18-inch-wheels.html
Honestly though, this large wheel craze has gotten a little out of hand.
Carry on though.
But the "large wheel craze" (which I agree is out of hand and stupid on many cars), and your article about Formula cars has nothing to do with what we are doing here. Have you read the whole thread? For me, this was a necessary and a PERFORMANCE upgrade. I guess what I am missing the point of your post.
Sorry Dave, I was mostly just being silly and facetious.
I understand the concerns of the thread and can relate as I wouldn't mind having a set of the 94-01 7-spoke OEM wheels in my collection.
But after looking at the available selection of tires for the 16/17 wheels, I'm not sure how I feel about it, unless Bridgestone plans to keep producing the Potenza RE010s for quite some time.
I also understand the performance necessity in regards to larger brakes, a wider track, and an improved contact patch.
I just think that sometimes people get caught up on larger wheels that are as light as smaller wheels, but then forget that larger tires will never be lighter than smaller tires.
And of course, this is all relative, cause more than likely a larger wheel will also be wider than the smaller wheel, which would then provide more grip through a wider tire (no stretch please).
I wonder about the benefits of increased grip versus less un-sprung/rotational weight (I'm sure there's a lot of math/equations/racing knowledge that has already been applied to these situations). Plus many other factors I haven't mentioned.
Regardless of my random thoughts, I was not trying to criticize anything being done here.
Please keep on pioneering and paving the way.
So I am thinking about 225/40/18 on an 8.5" front with a 295/30/19 on a 10" rear. I can't fit the 305/30/19 on the 10" or I would do that since IIRC it's as tall as the 275/35/19, so I was hoping 295/30 would work. Has anyone done the calculation?
Tires will be Yokohama AD08R or Michelin PSS but the 295 rears are back ordered for a few months now with no end in sight so probably the YOKOS.
Tires will be Yokohama AD08R or Michelin PSS but the 295 rears are back ordered for a few months now with no end in sight so probably the YOKOS.
Well my hunch was right, 295/30/19 is the best match for 225/40/18 front if you don't take into account the large gap in staggered widths, which many say degrades handling balance past 50mm. Otherwise 275/35/19 is the next best match if you want to retain that, or if you have a less than 10" wide rear wheel since that's what you need for a 295 minimum. Here is my research for future reference (note that the tire calculator I used said 295 needs a 10.5" wheel but the mfg data lists 10" as an approved width). Also you can see that the 295/30 matches the 225/40 front with a sidewall height of roughly 3.5" and the oversize percentage is close with a difference of less than 1.5% which is under the 3% f/r max variance recommended.
Originally I was thinking the AD08R would be my choice because it's stickier than the PSS, the rear size is back ordered (for months now!), and it has the largest tread width for a given size (especially the 225 which would be stretched on a 8.5" which I hate).
However, 18/19 already carries a weight penalty and tires are the perfect place to offset that because they have the most impact on MOI since they are the farthest out. With that said, the PSS is SIGNIFICANTLY lighter than even the AD08R!! The fact that it carries a tread wear warranty is amazing too, and I have put that tire on several cars I drive frequently and I love the ride comfort, quiet, and feedback quality it offers.
I threw the R888 in here because many turbo guys making big power love this tire but the main thing that turned me off was the 6/32 of new tread depth which is a 40% decrease compared to street tires. It also has no warranty and I am not racing.
I am thinking Turbo2go made the right choices in tire selection and sizing... But will it hold 600whp is my concern. I think at my power level maximum traction is my main concern. I have heard other people I know grumble about the PSS not being capable enough in that aspect. Thoughts?
Originally I was thinking the AD08R would be my choice because it's stickier than the PSS, the rear size is back ordered (for months now!), and it has the largest tread width for a given size (especially the 225 which would be stretched on a 8.5" which I hate).
However, 18/19 already carries a weight penalty and tires are the perfect place to offset that because they have the most impact on MOI since they are the farthest out. With that said, the PSS is SIGNIFICANTLY lighter than even the AD08R!! The fact that it carries a tread wear warranty is amazing too, and I have put that tire on several cars I drive frequently and I love the ride comfort, quiet, and feedback quality it offers.
I threw the R888 in here because many turbo guys making big power love this tire but the main thing that turned me off was the 6/32 of new tread depth which is a 40% decrease compared to street tires. It also has no warranty and I am not racing.
I am thinking Turbo2go made the right choices in tire selection and sizing... But will it hold 600whp is my concern. I think at my power level maximum traction is my main concern. I have heard other people I know grumble about the PSS not being capable enough in that aspect. Thoughts?
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