Hmm The Tire Rack , tires size correct ?

[rob-redm]

Well I bought these BBS LM rims a couple of weeks ago of Craigslist( still on the fence about getting rid of my RS rims) so they are 7.5 X 17 ..4 on a 100, e30 fitment, 40mm offset... so I looked up the +3 on Tire Rack.. They listed a 205/45-17 fitment for a this car... I sure hope they were right... Tires came the other day... and I mounted them up... I'm note they are going to be correct.. The price was right for sure.. The car has Bilstein with H&R springs.. I lowered the car some... not whole lot in my book... Thank you for any advice..

[Matt-B]

yea 205 45 16, and 17 is what a lot if not most people run


you wont have any issues, i run 205 45 16 on my e30, and have had 0 issues

[e30austin]

45 is too tall of a side profile with a 17" wheel on an E30. You need a 205/40.

[Matt-B]

im running a 205 40 on the e36 and bigger tires arrived today. its not much meat

[rob-redm]

The Tire Rack showed 20/45-17 on +3... so I figured they would know what is correct... Guess I will need to bolt them up... and cross my fingers
The BBS RS I have one running a 205/55-15...hmm... think I will be ok then ?

[e30austin]

The Tire Rack showed 20/45-17 on +3... so I figured they would know what is correct... Guess I will need to bolt them up... and cross my fingers
The BBS RS I have one running a 205/55-15...hmm... think I will be ok then ?

It really depends on the offset of the wheels, ride height, stiffness of suspension, etc. Most likely, you will be ok, but through corners, it may catch the fender. I would have played it safe with a 40 profile, but you've already got tires.

[Matt-B]

what he means is hope you dont die, best of luck

[rob-redm]

It really depends on the offset of the wheels, ride height, stiffness of suspension, etc. Most likely, you will be ok, but through corners, it may catch the fender. I would have played it safe with a 40 profile, but you've already got tires.

40 mm off set

[RainRider]

Probably need 18mm spacers with those.

[AndrewBird]

205s are too narrow on a 7.5" wheel IMO, they looked stretched. 215 would be better and I'd even run a 225.

A 205/45-15 is closer to stock than a 205/40-15, but only by a difference of 1% (+1.2% compared to -2.1%).

215/40-17 or 225/40-17 would also be very close to stock, but you might rub inside the fender.

[Matt-B]

on a side note, Austin is a stance warrior, so his views may be slight skewed toward the down and out life style
OP use caution

[loki_]

If they're really 40 offset, the front wheels will probably rub the struts. I'm on H&R race springs with e90 top hats.

On here, the orange is what I have and I clear the wheel and strut by 1-2mm and the tires never rub.

[hankolerd]

OP, What tires did you end up getting? I am trying to get pics of various 205/45 on 17x7.5" or 17x8" wheels, to decide if a 205/45r17 will work on my 17x8". If you can share what tires you bought I would appreciate it, so I can look up the specs of them.

And if anyone else wants to chime in, I am specifically considering the 205/45r17 Michelin Pilot Super Sport, which has a 8.5" sidewall and 7.7" tread width, but I am worried they will still look pretty stretched. I also am considering the Continental EC Sport, which has a decent 8.8" sidewall, but only a 7" tread width. Otherwise I am looking at various 215/40's, but I was hoping to get a 45 sidewall to help protect the rims against Seattle roads.

[Rennsport]

If you need to gain more offset, you could, ya know, mount the face in the barrel the correct way.

[nrubenstein]

205/45-17 is a correct diameter tire. A bit narrow for those wheels, but workable.

You're going to need spacers to make that wheel offset work, however. Figure 10-15mm for a stockish type look.