What about the fender tabs? Did you tuck those?
-
Protip: Profile posts are public! Use Conversations to message other members privately. Everyone can see the content of a profile post.
Unofficial Big-Wheel Thread: 18/18 and 18/19 - the future for NSX tire sizes
- Thread starter stuntman
- Start date
-
- Tags
- 18/18 18/19 big wheels
[MENTION=30599]prym8[/MENTION] - please report back! Much thx
[MENTION=30599]prym8[/MENTION], you live in Tucson? I just moved here. We should meet up! I'd like to check out those PSS tires you got.
Yes sir.. midtown.
I might have seen you a few weeks ago on Country Club (i was with my family in the grocery getter). A red NSX mostly stock with dark OZ wheels?
I might have seen you a few weeks ago on Country Club (i was with my family in the grocery getter). A red NSX mostly stock with dark OZ wheels?
Good question.. so far no. But I am wondering I could have an instance with a big enough bump + steering angle that would make me regret leaving them. And I figure you can't just bend something back that's aluminum. More to come.
I didn't mention the PS Cup2s are light: 20.1lb and 24.1lb in the sizes I got. I weighed all of it at 168lb for the set of 4, vs ~162lb for the original 1991 fat5's + Yokos according to the wiki.
My Michelin pss are light as hell! It is good to see others pushing the envelope of tire selections here. I run the pss in 225/35/18 and 265/30/19 on KW v3 and have zero rubbing, smashing of fenders, and have Oem liners in place. They are some great freakin tires.
Probably not me. Mine is red with silver wheels. Looked like this until yesterday. I just put back on my 18/19 Enkeis.
crap! from LA to LV to Tucson! nice
The Clarion NSX build uses a 225/40/18 front Michelin Pilot Sport Cup 2 tire.
I'm curious how this works (ignoring TCS issues)
Notice it's on the DF fenders
What's the specification on the Clarion's wheels?
Apparently they clear the Stoptech BBK?
I can see how they managed to fit the 225/40*18 tires on the car...
http://imgur.com/a/v26ZC
Last edited:
I put another 600mi on the PSC2s with a good bit of that on twisty roads, so here are a few notes.
The fit on 8.5" fronts:
-Awesome grip, quiet ride, amazing tires.
-With -3* front camber (using the CT kit) there is no issue at all clearing the stock fenders. Maybe the other big tire folks who needed wide DF fenders had more wheel offset?
-Ride height so far has been at 4.7" at the front jacking points, and 4.6" rear. It's close to what I'll be sticking with.. I am going to try 4.5 and 4.7 F/R next.
-The main rubbing issues under full lock aren't from the usual places, it's currently at the Cedar Ridge non-compliance clamps. I am replacing the socket head bolts with button heads and filing it all down a little. I don't expect to be done with this for a while yet, and for now my lazy side doesn't mind taking extra care with sharp parking lot turns.
-The rear liners do rub under compression so I think I need to trim and modify them.
-Without front fender liners a lot of debris sneaks into the rocker panels, and even the gap under the base of the door. I think in a downpour it might even soak through into the interior, so I am going to trim down pieces of mine and then reinstall them. Also spray-on liner to protect the fenders from rock strikes.
-If the Clarion NSX has no liners/shrouds/fender protection that seems crazy to me. Anyway for fun:
The fit on 8.5" fronts:
-Awesome grip, quiet ride, amazing tires.
-With -3* front camber (using the CT kit) there is no issue at all clearing the stock fenders. Maybe the other big tire folks who needed wide DF fenders had more wheel offset?
-Ride height so far has been at 4.7" at the front jacking points, and 4.6" rear. It's close to what I'll be sticking with.. I am going to try 4.5 and 4.7 F/R next.
-The main rubbing issues under full lock aren't from the usual places, it's currently at the Cedar Ridge non-compliance clamps. I am replacing the socket head bolts with button heads and filing it all down a little. I don't expect to be done with this for a while yet, and for now my lazy side doesn't mind taking extra care with sharp parking lot turns.
-The rear liners do rub under compression so I think I need to trim and modify them.
-Without front fender liners a lot of debris sneaks into the rocker panels, and even the gap under the base of the door. I think in a downpour it might even soak through into the interior, so I am going to trim down pieces of mine and then reinstall them. Also spray-on liner to protect the fenders from rock strikes.
-If the Clarion NSX has no liners/shrouds/fender protection that seems crazy to me. Anyway for fun:
Thanks for the feedback [MENTION=30599]prym8[/MENTION]! I'm surprised (in a good way) to hear they are quiet. Most youtube reviews say they are fairly loud. These are definitely my next tires then. Too bad my PSS's seems like they are lasting forever.. sigh. I need to go do a few drifts and burnouts now...
Who installed your front Comptech camber bushings? That's been on the top of my to-do list for forever now. My last alignment only yielded -1.6 camber up front. Shocking and totally inadequate.
Who installed your front Comptech camber bushings? That's been on the top of my to-do list for forever now. My last alignment only yielded -1.6 camber up front. Shocking and totally inadequate.
[MENTION=20915]RYU[/MENTION] is it an issue finding a mechanic who'll install your camber bushings? I figured SoCal was like near-mecca and 2nd only to Japan for NS-xpertise. That said my local mechanic did call on a favor to borrow the press from a Honda mechanic to install mine and said it wasn't trivial to do.
About the tire noise I could be totally wrong. I haven't had my rear bulkhead pieces in and I'm always dickering around with my car so much that I don't really have a steady baseline for comparison.
If there is a smartphone app or cheap decibel meter I would be game to try comparing noise data.
About the tire noise I could be totally wrong. I haven't had my rear bulkhead pieces in and I'm always dickering around with my car so much that I don't really have a steady baseline for comparison.
If there is a smartphone app or cheap decibel meter I would be game to try comparing noise data.
I'm not sure on the sport cup 2's but when I swapped to the PSS it was so quiet and smooth that I started to hear tons of things I never heard before from the car. I really love the PSS tires. I only wish they still came in a 215 because under extreme driving through dips and corners, the fronts make contact with the fender liner clips. But just a love bump, nothing serious. Also, I wish the Michelins didn't have such a tall sidewall. But I am almost certain,that is the reason for the sedan like comfort.
Great feedback [MENTION=30599]prym8[/MENTION] ! Do you have any more pics?
Here's some pictures of Bonhamsurf's setup:
225/40-18 & 275/30-19
18x8+35 & 19x10+40
IMO it needs 35 series rear tires instead of the 30s for TCS/ABS/looks (but still looks amazing):
Here's some pictures of Bonhamsurf's setup:
225/40-18 & 275/30-19
18x8+35 & 19x10+40
IMO it needs 35 series rear tires instead of the 30s for TCS/ABS/looks (but still looks amazing):
Last edited:
I think the lens is bending stuff in this pic a lot plus I'm halfway in the dirt :smile: anyway the camber here is -3* front and -2* rear. Which works great for my needs. My next alignment I am going for F: 3mm toe out; R: 4mm toe in; ride heights 4.5 and 4.7" at jacking point.
Last edited:
I am posting for a sanity check.
I was planning on running a 17x9 and a 18x10 tire setup for my new widebody setup (30mm fender increase front and rear). Turbo2go told me I would regret that choice and should go with a 18 and 19 setup to get better tire selection. I doubt I would regret it but I should at least consider the possibility of running that setup. With that said while I was looking at tires options for pilot sport cup 2 I only saw one setup that stayed within the 5-7% range. Some got close at 4.7% but didn't make it. The sizes that did work was a 225/40ZR18 up front on a 18x8" wheel and a 315/30ZR19 on a 19x11" wheel. This to me seems crazy. That's a 3" width difference front to rear and also raises center of gravity 1.7". A close but not within the 5-7% window is 265/35ZR18 with a 315/30ZR19.I don't think I can lower the car to offset the height increase with these because the wheel is so large it would contact the headlight housing up front. I could try a 245/40ZR18 but that would make the front wheel even larger in diameter while making the width slightly smaller.
Do you guys think that is too extreme of a size difference?
I was planning on running a 17x9 and a 18x10 tire setup for my new widebody setup (30mm fender increase front and rear). Turbo2go told me I would regret that choice and should go with a 18 and 19 setup to get better tire selection. I doubt I would regret it but I should at least consider the possibility of running that setup. With that said while I was looking at tires options for pilot sport cup 2 I only saw one setup that stayed within the 5-7% range. Some got close at 4.7% but didn't make it. The sizes that did work was a 225/40ZR18 up front on a 18x8" wheel and a 315/30ZR19 on a 19x11" wheel. This to me seems crazy. That's a 3" width difference front to rear and also raises center of gravity 1.7". A close but not within the 5-7% window is 265/35ZR18 with a 315/30ZR19.I don't think I can lower the car to offset the height increase with these because the wheel is so large it would contact the headlight housing up front. I could try a 245/40ZR18 but that would make the front wheel even larger in diameter while making the width slightly smaller.
Do you guys think that is too extreme of a size difference?
Last edited:
[MENTION=6399]Midnight_Raven[/MENTION] for my PSC2s I calculated 6% based on the specs from TireRack:
225/40-18 25.1"
275/35-19 26.6"
Speaking of sanity checks I am thinking of a 2nd set on OEM '02+ wheels: Michelin Pilot Super Sports 215/45-17
245/45-17
(24.7"/25.7" diameter).
Would these tires fit the stock wheels, and given the car is already modified for big tires, are there any reasons to avoid this setup?
225/40-18 25.1"
275/35-19 26.6"
Speaking of sanity checks I am thinking of a 2nd set on OEM '02+ wheels: Michelin Pilot Super Sports 215/45-17
245/45-17
(24.7"/25.7" diameter).
Would these tires fit the stock wheels, and given the car is already modified for big tires, are there any reasons to avoid this setup?
Last edited:
So after looking at my current setup which worked just fine with my DF 8mm fenders over a 235/40R17 and 275/35R18 (has a 4.9% size diff) I'm thinking maybe anything with a ratio above 1.045 can be an acceptable combo. Although I do notice in extremely rare cases my traction control will kick on but usually that is in street driving when I'm just cruising and I hit a bump at a strange angle or something.
With that said I've done some research this morning. If I go with a wheel size 18x9 for the front and a size of 19x10.5 in the rear I would have the following (Extreme Performance, Streetable Track, and Racetrack) options available for sizes that I can choose from. (Obviously some of these would not work with stock bodied NSXs and tires would bulge or stretch in different configurations)
225/40R18 and 275/35R19 (RE-71R, ZII*, R-S3, SUR4, AD08R, PSC2) 6% size diff (Verified setup)
235/40R18 and 275/35R19 (RE-71R, ZII*, SUR4, AD08R, PSC2) 4.7% size diff - front being .3" larger diameter than the 225/40R18
235/40R18 and 285/35R19 (RE-11, RE-71R, PSC2, Trofeo R) 5.9% size diff - front being .3" larger diameter than the 225/40R18
255/35R18 and 305/30R19 (RE-11, RE-71R, AD08R, R888) 5.2% size diff - front being .1" smaller diameter than the 225/40R18
245/35R18 and 315/30R19 (Hoosier R7) 6.9% size diff - front being .7" smaller diameter than the 225/40R18
255/35R18 and 315/30R19 (Hoosier A7 & R7) 5.2% size diff - front being .3" smaller diameter than the 225/40R18
265/35R18 and 315/30R19 (PSC2) 4.74% size diff - front being .2" larger diameter than the 225/40R18 (This may possibly fit under a 30mm wide fender with at least 1.5-2 deg of front camber)
I can see that going with this size gives plenty of performance tire options that would work with widebody NSXes. The bolded section I think probably where I'll aim for. It should allow me to put more tire under the wider fenders but still work with TCS and in theory give me a little extra space in the wheel well, even though it's practically negligible.
Hopefully this list is helpful for other guys out there considering this option. If you guys see anything that is obviously wrong please let me know and we can update.
Last edited:
I run 02+ wheels in my S2000 with this setup. The 245 tire is noticeably stretched in the rear tire as compared to the front. Looks kind of funny if you know what you're looking at. I can post pics of you'd like. 255 would have been ideal.
Last edited:
good article!
Midnight raven.... 18x9 and 19x11 is what I would shoot for with a widebody. Billy mentioned earlier on that a huge split front/rear can be overcome by suspension tuning. At worst, you are leaning toward a safe understeer. As far as the range I almost want to say who cares... I am about to yank out the TCS. We never use it anyway. I find it MORE dangerous on the track as it takes away my control.
I'm considering the Michelin PSS for my 18-7.5 18-10 Advans. What would be a better rear size to match the 225/35-18, 265/35-18 or 275/35-18? Rubbing isn't a concern, just TCS and performace.
The 265/35-18 rear is 4.56% oversize compared to a 225/35-18; the 275/35-18 rear is 5.69% oversize (ideal sizes, not real PSS sizes). 91-93 OE is 7.75%; 94-01 is 4.65%; and 02-05 is 5.30%. I believe your car is a '92, so you'd want the 275 rears.
Similar threads
