Z4 3.0i SE wheel sizes

N

niitrm

Member
 Chippenham
Hi all from Wiltshire UK.
Just bought myself my first Z4, I guess like a lot of new owners I love the car, but the runflats leave a lot to be desired in the "tramline" and "firmness" stakes!!

After 2 weeks I have decided to ditch them for some Falken 452's (loads of great info on here for new owners - pat on the backs for you), but talking to some of the alloy retail companies, not many do the staggered sets.

I have the star 108's, so 225x40 8J on the front and 255x35 8.5j on the rears, nearly all the wheels I am being offered are 225x40 8j sets for front and rear.
This does kind of make sense in the later tyre wear rotation stakes, but how would it look - ie flush to the arches in the rear? or sunk in and weedy looking?

Would this upset the handling? laws of physics state that the larger the mass and the greater the distance from the centre of rotation, then the more force is required to turn it - ordinary language means the fatter the tyre / alloy on the rear the more weight and greater force required to turn, would this then mean slower acceleration for the larger rears not to mention the extra cost of the rubber?

Just not sure if I need to hang out for staggered or not?
Could I get larger than 225 on the 8J's?

Love some feedback please.
 
IIRC the smaller engined cars run thinner rears.

I'd stick with the standard setup, more grip to put the power down.
 
Stick to the staggered set up as it looks way better than narrowing them to 8's all around. Staggered was an upgrade on the top models / upgrade wheels option as just another minor tweak to make them look better

You can't rotate tyres properly anyway as most are unidirectional

Wider tyres may well fit but Falkens have very little rim protection so you'll trash the wheels pretty quick

If your really concerned about the rotating mass and all that then drop to 17" rims :)

If you go aftermarket be very careful of getting the correct offset, backspace, etc. as there's not a lot of room to go wrong.

Hope these comments help
 
Thanks for all your help....I have decided to go for another staggered set as per the 108's, probably the ACS type 4 with Falken 452's.
My car is black so should look great in silver, will post some pics as soon as it stops raining!
 
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