Tyre profile size

[ETERNITY]

Is it ok to run different profiles on the front and rear

I am going to run 205/45 and 215/40 8.5j at the rear for a staggered set of bbs rs

[magpie]

perfectly fine,all you need is a matching sized pair per Axel.

[Brianmoooore]

Need to have similar rolling radii front and back if you have ABS.

[HairyScreech]

^^ The abs thing is quite important, otherwise it will be constantly thinking the rear is locking, not a good start.

However otherwise its fine.

[ETERNITY]

So will my fronts need to be 40 as well

I do have abs

I will just run with 45 fronts and 40 for on rears for now.
It brakes fine

[ETERNITY]

I am running staggered bbs rs

7.5 j and 8.5J and tyre place has put me 205/45/16 on the front and 215/40/16 on back

Should I get these replaced ASAP or should I replace asap
Will It be ok for doing a motorway trip tmoz

[HairyScreech]

225/40/16 would be a closer match. (0.8%)
your currently at 2.1% difference.

Hopefully someone with more experience of staggered wheels on an e30 will be able to say better.

[ETERNITY]

225/40 would catch the arch, with 215 it's totally clear.
Seems to drive better with 215/40 than 225/45

I think most staggered set ups run differant tyres.

[HairyScreech]

Yeah, a lot of people on here are running those sizes, one should be along soon.

[verde]

225/40 would catch the arch, with 215 it's totally clear.
Seems to drive better with 215/40 than 225/45

I think most staggered set ups run differant tyres.

Im running a healthy suspension drop and 9" wide allround on 215/40s and i have no arch catching issues what so ever

[ETERNITY]

225 can cause arch issues if the et is high