z4 e85 tire Retrofitting(for advice)

[se4y]

The part number of my z4 rim is 36116758191(8JX17 ET:47). The original tire is 225/45/17.My question is may I change the rear tire to 235/45/17 or 245/40/17 with the same rim? Which choice is the best if it is possible? Thanks

 

[Adamski]

Simple answer is yes. You can do it. However, sticking to original spec width is probably best. Wider tyres, even on the same profile, can impact your speedo reading along with several other tracking related issues which would take too long to explain.

Rubber wise - you'll want either all runflat tyres. Or non runflat. There are LOADS of good tyres out there. And, unless you're driving on the limit all the time, you'd be hard pushed to notice any real difference in normal driving conditions.

For runflats - try Michelin Pilot Sport 2s, but we ready to empty your wallet. It'll hurt.

For non runflats - try any of:
Vredestein Ultrac Sessanta
Avon ZZ5
Hankook Ventus
Goodyear Eagle F1
Falken 452


Sent from my iPhone using Tapatalk

 

[se4y]

Simple answer is yes. You can do it. However, sticking to original spec width is probably best. Wider tyres, even on the same profile, can impact your speedo reading along with several other tracking related issues which would take too long to explain.

Rubber wise - you'll want either all runflat tyres. Or non runflat. There are LOADS of good tyres out there. And, unless you're driving on the limit all the time, you'd be hard pushed to notice any real difference in normal driving conditions.

For runflats - try Michelin Pilot Sport 2s, but we ready to empty your wallet. It'll hurt.

For non runflats - try any of:
Vredestein Ultrac Sessanta
Avon ZZ5
Hankook Ventus
Goodyear Eagle F1
Falken 452


Sent from my iPhone using Tapatalk

Thanks a lot!!. I have ordered 225 45 17 and 235 45 17 non runflats . (The dealer think 255 will bring more noise.) I hope they will bring me more comfortable than sports style.