What tires is everyone running for track? It seems like a popular wheel size anyway because of the wheels like Monolites and Ethos come in these sizes...
I've been running 195/50R16 and 225/45R17 on euro-spec Exige wheels(the heavy cast ones) so far, and I finally got Toybox48 Hethel forged wheels in 16x7(+22) and 17x8(+35).
I've done some googling around, but some of the results are muddied with choices based on aesthetics.. which I don't really care for.... It won't be for autocross either, so no crazy rule-skirting sizes....
I'm running Nitrons with 450/600 springs lowered to 120/130mm f/r, and going lower is not an option as I won't clear my driveway. I already scrape pretty badly going in/out.
My car sees 80% track, maybe occasional canyon runs, and sees 0 rain.
Shamelessly hotlinking from another thread... (New Toyo R888R reviews
I've seen people run stock 195/225 sizes with their 7"/8" setup with the old R888, which struck me a little odd since the tirerack's Measured Rim Width seem to call for 205/235...
But, now that the new R888R's tread widths are quite a bit narrower than the old one, I'm wondering if I should indeed move up to 205/235. The popular 245 rears are unavailable for the R888R, and I imagine 255 will definitely rub.
If I were to do 205/235, the ride height changes due to different sidewall sizes are....
205/45/16 -0.4"~-10.16mm 235/40/17 -0.3"~-7.62mm
205/50/16 +0.4"~+10.16mm 235/45/17 +0.4"~+10.16mm
If I go DOWN an aspect ratio, I'll have to raise the car ~10mm and re-align/corner balance it. The gearing will be shorter for better acceleration. The tire spring rate probably goes up = quicker response but more skipping on rough patches. Higher chance of wheel damage due to less sidewalls.
If I go UP an aspect ratio, I probably can get away not re-align/corner balancing. The gearing will be longer for poorer acceleration, in addition to additional rotational mass due to more tire. Lower spring rate = lazy handling but possibly more grip. Lower chance of wheel damage, but higher chance of putting holes thru my wheel liner.
To add to my dilemma, I keep finding articles that wider tires don't always mean it's better.
Originally Posted by National Auto Sport Association
using a tire with a smaller cross section width is often better than trying to use the widest tire that will fit in the fender well on a rim that is narrower than optimum.
How to PROPERLY select and size TIRES for PERFORMANCE > MotoIQ - Automotive Tech, Project Cars, Performance & Motorsports
Originally Posted by MotoIQ
rule of thumb:
“For ideal handling: when sizing a tire for a given wheel, I usually target a tire’s TREAD width to be as wide as the WHEEL width, or 0.5” narrower than the wheel width.”
I realize the R888R only just came out recently so there isn't much of a data, but I imagine people will start migrating to it once they wear out the old R888s. I expect people to be in similar situation as I am, so I figured I'd leave this out here so everyone can discuss their thoughts and their plans for it.