Upgrading to bigger 18” wheels

carlsson · Post by **carlsson** » Thu Jun 27, 2019 5:39 am

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Will these wheels fit an e85 z4?
If yes then what would be the best tire combo?

mr wilks · Post by **mr wilks** » Thu Jun 27, 2019 8:59 am

Yes they will fit & sit very well , assume stock springs E85 then any combination below
215 40 / 225 40 18 front
245 40 18 / 255 35 18 rear

carlsson · Post by **carlsson** » Thu Jun 27, 2019 3:21 pm

Thanks mr wilks. I’ve been wanting to upgrade but will the ride really be stiffer coming from 16in wheels? I know the z4 looks dorky with the 16in oem wheels but the ride is great with it.

Will a 17in wheel be a better compromise between ride and looks?

carlsson · Post by **carlsson** » Thu Jun 27, 2019 3:55 pm

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These 17in style 185 looks swell in the z4 too.
If i would go with the 17in wheels...which tire would be better? 225/35 or 225/45?

buzyg · Post by **buzyg** » Thu Jun 27, 2019 4:17 pm

18's should be fine ride wise, on normal tyres.

carlsson · Post by **carlsson** » Thu Jun 27, 2019 8:21 pm

I can’t imagine how hard the ride would be if you have run flat tires on 18s...

dr_john · Post by **dr_john** » Thu Jun 27, 2019 8:40 pm

carlsson wrote: ↑Thu Jun 27, 2019 8:21 pm I can’t imagine how hard the ride would be if you have run flat tires on 18s...

Not quite as hard as RFT's on 19s...

That's why I went back to non-RFT's on 18s on my new zed, looks aint everything

carlsson · Post by **carlsson** » Fri Jun 28, 2019 4:19 pm

I found an 18inch squared set of wheels with 245/40 tires on all wheels. Will that fit the fronts or they are to wide?

road warrior · Post by **road warrior** » Fri Jun 28, 2019 5:37 pm

"
I found an 18inch squared set of wheels with 245/40 tires on all wheels. Will that fit the fronts or they are to wide?"

a lot of "iffs" in there, iff the ofset is -50 at the front maybe
if the suspension is standard then maybe
if you have new springs and shocks maybe

otherwise you will be grinding down the wheel arch like i did
the rear will be fine

Mr Tidy · Post by **Mr Tidy** » Fri Jun 28, 2019 8:56 pm

carlsson wrote: ↑Thu Jun 27, 2019 8:21 pm I can’t imagine how hard the ride would be if you have run flat tires on 18s...

"Not exactly cossetting" is how I'd describe ride quality on staggered 18s with Bridgestone run-flats!

To see what options will work this might help:- https://www.willtheyfit.com/

carlsson · Post by **carlsson** » Fri Jun 28, 2019 9:56 pm

Thanks Mr Tidy....will use that link.

carlsson · Post by **carlsson** » Thu Jul 11, 2019 3:32 pm

I’ve always liked the style 119 wheels,simple design and is easy to clean...but I never see one on a z4. What are your opinions on these? Will they look good on a black z4?

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carlsson · Post by **carlsson** » Sun Jul 14, 2019 9:35 pm

The 119 wheels were so cheap and it has newer tires so I took the plunge. I think it looks okey on the z4. Ride hasn’t changed much too. At least now I won’t spend so much time cleaning the wheels.

Mr Tidy · Post by **Mr Tidy** » Sun Jul 14, 2019 10:19 pm

carlsson wrote: ↑Sun Jul 14, 2019 9:35 pm The 119 wheels were so cheap and it has newer tires so I took the plunge. I think it looks okey on the z4. Ride hasn’t changed much too. At least now I won’t spend so much time cleaning the wheels.

They look good - I'm a big fan of 5 spoke BMW wheels.

And as you say they are so much easier to clean!

(Unlike the MV2s my 1st Coupe had).

carlsson · Post by **carlsson** » Mon Jul 15, 2019 3:57 am

Glad somebody liked it...

simple and so easy to clean
I really prefer the style 197, it would look good on any BMW...but my back would hurt cleaning that.

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