Poll: What size RE71 for CTRs in DS?

[destoups]

Curious -- have seen folks running 245s to 285s.

If you've tried more than one size, choose the one that worked best and add a post telling us why you chose it over another.

If you haven't even raced the car yet, let us know which you'll try first.

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[RacingManiac]

I haven't chose anything yet actually, the 3 events I've ran I ran on left over 285/245 that came with the wheels I bought from previous owner, of which the 285s were basically dead(they started life in Danny Kao's Type R, IIRC). Then I CLd a set of 275s to replace the 285s with to run 2 left over events of the year. They were MUCH better than the 285s but I think that was just through the virtue that they have meat left and are not as heat cycled out. The 285 were having issues hooking up in a straight line and in turns on a relatively warm day on the Toledo concrete(to the point that we were pretty worried about what have I done in getting a 300 horsepower front drive car). The 275s were having no issues putting power down on a high 40s day on dusty/cold asphalt.

I am planning to test the 275/245 setup against 265/265 setup this year if the vaporware BFG 275s remains vaporware(if BFGs are available I'd run 4 of those). I'd prefer to run square setup over staggered just because its easier to manage tires that way. The car on stock bar with 275/245 on not very representative surfaces feels amazingly neutral. I think some of that will go away on wider rears but I think with Karcepts bar I can tune that out along with taking out rear toe.

 

[apexit53]

I am torn as i do some more research. Keeping a square setup is more important to me for longevity! I am leaning to start with 255 for the 1st year.

 

[destoups]

Any 19x8.5 Motegi users?

Tire Rack says 265s just won't fit, and they won't mount them. (They show rim width range as 9 to 10.5). They're normally pretty good about accommodating me and the guy seemed to think a 265 was pushing things way too much.

While I have run 265s and even 275s on an 8.5 rim, I haven't had anything mounted on Motegis. Is there anything that would make them unable to cope with a 265?

UPDATE -- they mounted up fine. A little pissed that Tire Rack wussed out on this; it cost me $80.

 

[RacingManiac]

Mine are still sitting bare in boxes, I haven't decide what to buy for them yet(now that there are rumor for 275 BFG for Feb again, I'll probably wait at least that long)....

I can tell you 275s on the NSX wheels were a bitch and a half to mount. I am amazed that TR won't mount 265s though.

 

[destoups]

Thanks, went ahead and ordered them shipped separately. Some folks were on 285s!

 

[RacingManiac]

GM team's Camaro ran 285 on 8.5s before too, I wasn't too fond of how that drove, but I feel that car was too soft in general. When I was running Danny's old 285s on the front the CTR doesn't feel like it was too floppy, it just didn't have grip at all because the tires were real dead...

 

[Z3papa]

GM team's Camaro ran 285 on 8.5s before too, I wasn't too fond of how that drove, but I feel that car was too soft in general. When I was running Danny's old 285s on the front the CTR doesn't feel like it was too floppy, it just didn't have grip at all because the tires were real dead...

That's amazing they could mount them. Many M3 owners tried and most failed at getting 285's onto 9" wheels. My installer figured it out but it took 3 hours for him to get the two front tires done. Much easier on 10" rears.

 

[RacingManiac]

yeah people have had trouble doing that....they got a hang of it in the end....I flipped the used 285 on the Civic when I first got them and that wasn't that bad, but those are pretty old tires.

FWIW GM went back to 265s after that first year mainly because it wasn't particularly good to drive on 285s...

 

[Z3papa]

yeah people have had trouble doing that....they got a hang of it in the end....I flipped the used 285 on the Civic when I first got them and that wasn't that bad, but those are pretty old tires.

FWIW GM went back to 265s after that first year mainly because it wasn't particularly good to drive on 285s...

Once they have been mounted, they are much easier to unmount and remount. On 9/10" wheels, they were not badly pinched, but the short sidewall definitely did not help sidewall compliance.

 

[bouford]

we typically have short and tight courses in hawaii so i opted for 255s to get up to temp faster plus i can rotate them after every race. gl!

 

[RacingManiac]

The rumor seems persistent on the BFG 275/19s.....

 

[apexit53]

The rumor seems persistent on the BFG 275/19s.....

The BFG is already super numb... with the balloon 275 i cant imagine how bad that would feel!... or not feel!

 

[RacingManiac]

Pretty used to it on my 245 on 7.5 GTI. Also the possibility of contingency....

 

[bouford]

The BFG is already super numb... with the balloon 275 i cant imagine how bad that would feel!... or not feel!

hence the 255s for me

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