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[Dr. Anthony]

Hey guys, I'm going to order tires for my newly purchased BBS CH 19" wheels.

Fronts: 19x8.5 et20
rears: 19x10 et20

It's for my E92 M3.
What tire size would you go with?

Some say 295/30 in the rear, but I'm not looking for it to rub. Stick with the usual 275rear 235 fronts?

This is how my car sits with my SF-71 wheels.

[slicer]

275/35/19 rear
245/35/19 or 255/35/19 front

[Dr. Anthony]

Originally Posted by slicer

275/35/19 rear
245/35/19 or 255/35/19 front

I have 255/35/19 hankooks on my SF-71s now, and they rub a bit. not much, but just enough to scuff the wheel well plastics. it may be different now with the 20 offset.

[slicer]

Originally Posted by Dr. Anthony

I have 255/35/19 hankooks on my SF-71s now, and they rub a bit. not much, but just enough to scuff the wheel well plastics. it may be different now with the 20 offset.

255/35/18 sometimes rubs the back of the liner a little at full lock, depending on offset, wheel width, and tire brand. I don't know what your current wheel size and offset is so I can't compare that with the CH's. et20 of the CH wheels aren't very aggressive so worst case they will rub about the same with the CH's. If that slight rub bothers you then go with 245/35/19.

[dereksM3]

I run 19x9 and 19x10.5 BBS CHR's with 255/35/19 and 275/35/19 Michelin PSS. I have OEM alignment and height with zero rubbing.

[Dr. Anthony]

I don't mind the rubbing as all it's doing is just scuffing the liner. I think i'll keep the 255s up front.
Just debating on the rear size. I was told to try 295/30s but I'm leaning toward the 275 rears

[dereksM3]

295 and 255 is a fairly big imbalance. With your size rears 275 is plenty. Your contact patch with a 295 will hardly be any bigger on a 10in rear wheel as well. 295 with those offsets and width difference will create excess understeer too.

[Dr. Anthony]

Originally Posted by dereksM3

295 and 255 is a fairly big imbalance. With your size rears 275 is plenty. Your contact patch with a 295 will hardly be any bigger on a 10in rear wheel as well. 295 with those offsets and width difference will create excess understeer too.

That was going to be one of my next questions. (the understeer)

K, so looks like my best bet is to stick with a 275/35? and a 255/35?

[dereksM3]

I would personally. Keeps the same OEM stagger F to R yet a bit more traction

[slicer]

Originally Posted by Dr. Anthony

That was going to be one of my next questions. (the understeer)

K, so looks like my best bet is to stick with a 275/35? and a 255/35?

yep.

[Dr. Anthony]

Thanks for the input guys! I pick up my CH's tomorrow

[Ezio]

what about a 285 rear?

[macavant]

I'm running 295/30 Michelin PS2 on BBS CH-R 19x10.5. It had minimal rub when new - once the upper portion of the plastic wheel well liner ate through; rubbing stopped.