10 x 18's ET 58 on the rear?

[Gary H]

Hi all

After spending hours with various offset calculators I'm almost there, but would really like someone's advice, who's done it:

I've just bought a set of Carrera III alloys:

Fronts: 8J x 18 ET 57

Rears: 10J x18 ET58

My current Turbo twists are:

Fronts: 7.5J x 18 ET50

Rears: 9J x 18 ET52

The car is a 2001 Boxster 986 3.2S

What I'm trying to work out is the size of Spacer required at the back - I currently have a 22mm and whilst it easily clears the strut, the tyre does stick out of the arch slightly.

The research I've done suggests a 15mm or an 18 mm spacer will be perfect, but not having the luxury to try before I buy I don't want to make a mistake and I'm finding mixed results re. rubbing - whilst the 18 will definitely work, will the 15 tuck in slightly without rubbing on the strut? I'm getting confused!

I've had advice that even 11mm spacers will work...and I'm now contemplating a fender roll!!

Cheers

[Dr.Strangepork]

I think I may be able to help as I know a thing or two about wheel offset :)

Previous car

If you run a 15mm spacer the outer edge of the wheel is going to be in the same place as your wheels are currently, but the inner edge is going to be 26mm closer to the strut than your current setup (including your 22mm spacer). Make sure that it'll clear the strut. Obviously an 11mm spacer will bring it another 4mm closer to the strut.

The fronts will be 13mm closer to the strut, so just make sure they clear.

[jmatta]

My rears are 10 x 18 with an et 47. The inside is a bit close to the strut, but does not rub. I did need to tie back the e-brake cables, however. My car is lowered about 1.5" ('02 S), so I did not want the outer rubbing on the fender lip. As posted previously, 11mm would put you where mine are and 15mm would move you out ever so slightly.

[Gary H]

...thank you but I'm not getting the ET...mine is 58 - 11mm more than yours...so surely 23mm would put me back where yours is?

[Dr.Strangepork]

...thank you but I'm not getting the ET...mine is 58 - 11mm more than yours...so surely 23mm would put me back where yours is?

His ET is 47, yours is 58; putting an 11mm spacer on yours would make your ET 47 so it would fit exactly like his.

[juniinc]

That is what I have on my 01 986S,,,10(almost 11)J x 18 ET 58 on the rear.

7mm H&R spacers all the way around & she is lookin good.

As jmatta suggested above, 11mm would be perfect.

http://www.renntech.org/forums/index.php?/topic/16783-set-of-wheels-just-came-in/page__p__84104__hl__eurotech__fromsearch__1#entry84104