Common wisdom - track wheels and tires

[heinzboehmer]

Thanks. Not a ton of options, but quite a few.

Oh I meant specifically for the RE71RS. Wanted to try that tire out and 255/40 was the only adequate option for a 17" wheel.

[bigjae46]

Thanks.

255/40R17?

Pricing looks pretty good at that size. Any issues around the reduction in circumference from the more customary sizes? What tires are you using?

It will gear up the car a little bit. The downside is a smaller outer diameter tire can start to overheat if you're running at a high speed track like COTA or Road America which will accelerate wear and likely have less overall grip.

But a 255/40R17 it probably right on the edge, should be OK. I tried a 245/40R17 and it was too small.

[D-O]

Thanks. Not a ton of options, but quite a few. NT01, RE71RS, Continental, RA1, R1R, R888R, RS4, RT660, RT615K, V730, AD09, A052, A055, Proxes RR and R, BFG, . NT01 and RE71RS seem to be the cream of the crop, but I hear okay stuff about many of the others as well.

I doubt I am a good enough driver to notice a big difference between a 275 and a 255, and the 255's are cheaper. Might be the way for me to go.

[heinzboehmer]

Thanks.

255/40R17?

Pricing looks pretty good at that size. Any issues around the reduction in circumference from the more customary sizes? What tires are you using?

RE71RS. Unfortunately not a ton of options for those at 17, so yep running 255/40R17. TPMS notices pretty much immediately and the beep always freaks me out, but other than that no issues.

[D-O]

I'm running 255 square on the aforementioned wheels.



Style 513M? That's what I originally wanted as track wheels after seeing your car on them, but unfortunately harder to find these days. Especially compared to ARC8s

Thanks.

255/40R17?

Pricing looks pretty good at that size. Any issues around the reduction in circumference from the more customary sizes? What tires are you using?

[heinzboehmer]

275's all the way around?

I'm running 255 square on the aforementioned wheels.

For something different, there is a Fuchs fully forged 18x9 ET29 wheel that will clear most BBKs with room to spare

Style 513M? That's what I originally wanted as track wheels after seeing your car on them, but unfortunately harder to find these days. Especially compared to ARC8s

[Slideways]

For something different, there is a Fuchs fully forged 18x9 ET29 wheel that will clear most BBKs with room to spare

[ethan]

My 18x9.5" ARC8s in ET35 require at least 5mm spacers to clear the 996 brakes with Rally Road brackets at the spokes, but at that point you need a hub extender or spacer with one built-in to stay hubcentric. It's annoying.

[D-O]

275's all the way around?

[heinzboehmer]

I'm running 17x9.5" ET35 + 7.5mm spacer up front and 17x10" ET25 in the rear. Clears just barely up front, but there's tons of room in the rear.

[D-O]

Thanks. I was thinking ET35 all the way around. ET25 will work for a square set up? Spacers?

[mrgizmo04]

Can anyone confirm whether or not the 17" Arc8 will accommodate the 996 brakes?

17x10 et25 is a confirmed fitment, other sizes/offsets not sure. Arc8 are tight with spoke design, ec7 have more room.

Sent from my SM-S911U1 using Tapatalk

[D-O]

Can anyone confirm whether or not the 17" Arc8 will accommodate the 996 brakes?

[OldRanger]

No front spacer with tires other than the RE-71RS?

I had some minor rubbing with Michelin 265. To be specific: when driving on track I would see minor scuffs of rubber on the yellow Ohlins spring. This was at a ride height of 13.5 inches center of wheel to fender and without the 3DM spacer. I didn't consider it an issue worth addressing.

When I put the RE-71RS on...the contact was more of an issue because it wore off some of the yellow paint.

[D-O]

Are 265 and 275 width tires not a bit wide for 9.5" wheels? Way back (when 50 series tires were blowing people's minds) the rule of thumb was the tread width should be no wider than the rim width, and 265 or 275 width tires almost certainly have a tread width greater than 9.5". Have modern sidewalls made this obsolete?