Optimal Wheel size for HPDEs? Specifics inside

[GrandRoyaL]

i am running kosei´s 15x8 with 205 50 15 kumho v70a medium compound (or v700 in the usa i guess) (but on the m3 e30)
it fits perfectly and do not stretch, i would say it is better as the tire walls seem to be really straight with the rim. if you know what i mean.

the tire grips and grips... did one track day in the wet with them just broken in, i was surprised it was that good. (but not on standing water of course). in the dry even better.

[Wh33lhop]

V700 is an r-compound tire and will run wide. My 205 R888s were pretty square on my 8s too.

(don't mind the crap the tire picked up)


For comparison's sake here is a 205 XS on an 8 (in front)

[z31maniac]

Although in reality, the 225/45 is faster on a 9" wheel

That size is the go to in the Miata world, so I wouldn't worry about it being "too much" tire on an E30.

[phenryiv1]

Alright, i am sold on 15x8 wheels. Now i need to look for which one.

[kts]

Alright, i am sold on 15x8 wheels. Now i need to look for which one.

TRM C1s!

http://www.tirerack.com/wheels/WheelCloseUpServlet?target=runWheelSearch&initialPartNumber=C158020400B&wheelMake=TRMotorsport&wheelModel=C1&wheelFinish=Black+Painted&showRear=no&autoMake=BMW&autoModel=325is&autoYear=1990&autoModClar=&filterFinish=All&filterSize=All&filterBrand=All&filterSpecial=false&filterNew=All&filterWeight=All&sort=Brand

Also comes in silver and anthracite. At $104/wheel I don't think you can beat the value/weight/width combo.

[Wh33lhop]

Although in reality, the 225/45 is faster on a 9" wheel

That size is the go to in the Miata world, so I wouldn't worry about it being "too much" tire on an E30.

Yep, just like the 205 will be faster on an 8 :p

Go for C1s in bright silver. The other colors look like poo unless you like the lame ass murdered out look...

[phenryiv1]

Yep, just like the 205 will be faster on an 8 :p

Go for C1s in bright silver. The other colors look like poo unless you like the lame ass murdered out look...

My car is yellow & blue and currently sports yellow bottlecaps with snow tires. Accents consist of dirt from the last rallycross.

Appearance isn't high on the list. :D





That said, I plan to go all yellow this summer with black trim, so i may go with black wheels for the track, murdered out look or not.

[Earendil]

My car is yellow & blue and currently sports yellow bottlecaps with snow tires. Accents consist of dirt from the last rallycross.

Appearance isn't high on the list. :D

That said, I plan to go all yellow this summer with black trim, so i may go with black wheels for the track, murdered out look or not.

C1 in black works fine depending on car and purpose. I present my sig pic as evidence. Chrome would look like shiet on my externally beat up lachssilber car :)

[liquidgroove]

I would go with 15x9 with 225/45/15 tires, if staying with 15 inch wheel. Should be a faster combo than 15x8 with 205 tires.

With BFG Rival coming out, there are more 225 options to pick. RS3, Rival, R1R (not recommended).

[Bimmerman325i]

R1R would be marginal for an E30, depending on weight. They really only work for flyweight cars, and they don't last long or like heat.

If budget is an issue, RS3. If you want a similar but better RS3 and are willing to pay for it, Rival.

Kumho XS could also be good, but not too many folks seem to run them. Bridgestone's new RE11A and Dunlop's Z2 are also great contenders.

[phenryiv1]

If budget is an issue, RS3. If you want a similar but better RS3 and are willing to pay for it, Rival.

Kumho XS could also be good, but not too many folks seem to run them. Bridgestone's new RE11A and Dunlop's Z2 are also great contenders.

Those are the exact tires that I have been considering. I had the Rival, ZII, and the 11A in my compare chart. No XS or RS3, but I had looked at them in the main view.

I am waffling on the 225 v. 205 given the sidewall rigidity benefits of the 205 on an x8 versus the generally wider contact patch of the 225.

TR wouldn't promise that they could mount the 205 on an x8 TR C1 wheel but said that they'd try.

[kts]

TR wouldn't promise that they could mount the 205 on an x8 TR C1 wheel but said that they'd try.

They told me the same thing when I had them mount some 245s on a 9" TRM wheel for my old Subaru but a few days later they were sitting outside my garage door waiting for me. I don't think they like to do it since they like to CYA but it's easy enough for them to do.

[Wh33lhop]

R1R would be marginal for an E30, depending on weight. They really only work for flyweight cars, and they don't last long or like heat.

If budget is an issue, RS3. If you want a similar but better RS3 and are willing to pay for it, Rival.

Kumho XS could also be good, but not too many folks seem to run them. Bridgestone's new RE11A and Dunlop's Z2 are also great contenders.

I didn't like my XS. Too numb. I'd choose between Z2s and Rivals.

Those are the exact tires that I have been considering. I had the Rival, ZII, and the 11A in my compare chart. No XS or RS3, but I had looked at them in the main view.

I am waffling on the 225 v. 205 given the sidewall rigidity benefits of the 205 on an x8 versus the generally wider contact patch of the 225.

TR wouldn't promise that they could mount the 205 on an x8 TR C1 wheel but said that they'd try.

205 may feel a bit more responsive, but 225s will be faster. That said, i's not tough to mount a 205 on an 8, it'll be fine.

[nrubenstein]

R1R would be marginal for an E30, depending on weight. They really only work for flyweight cars, and they don't last long or like heat.

If budget is an issue, RS3. If you want a similar but better RS3 and are willing to pay for it, Rival.

Kumho XS could also be good, but not too many folks seem to run them. Bridgestone's new RE11A and Dunlop's Z2 are also great contenders.

The Kumho XS is a great tire in the dry. Outright grip is superb, although response is just a little sloppy.

They are, however, one of the absolute worst tires that I have ever driven on in the wet. I have never driven on any tire with a greater delta between wet and dry performance. Not recommended.

[mcr_driver]

http://www.tirerack.com/upgrade_garage/WheelSearch.jsp?display=car&&autoMake=BMW&autoModel=325is&autoYear=1988&autoModClar=&filterFinish=All&filterSize=All&filterSpecial=false&filterNew=All&filterWeight=All&filterBrand=All

Just saw these Kosei's on tire rack K4R for 149$ more than the C1 but both are 15x8 and the Kosei's weight only 13.1 lbs...