Wheel size

[Mel w]

Can I replace 17” wheels with 19” on my 420 grande coupe

[Greydog]

Morning Melvin

Welcome to the Forum

Short answer yes you can, I believe 20" were also available

You can check at www.realoem.com it is a BMW Parts List just put the last 7 digits of your Vin into the search box and it will call up your model then look in the wheels/tyres section for correct fitment

Dave

[Mel w]

Thanks Dave I’ll have a look, I take it this doesn’t affect the speedometer. 

[Greydog]

Hi Melvin

The different size wheel / tyre combinations are calculated to be as close as possible in diameter so as not to effect the speedo reading

Example a 225x50x17" tyre/wheel will have a diameter of around 657mm a 225x40x19" wheel/tyre will be around 662mm and a 225x35x20" tyre/wheel will be around 665mm The difference being just a few mm will not effect speedo readings 

If you were to go for say 20" wheels and tyres to fill the arches better in a staggered set (wider rear rims) front would be 225x35x20" and 665 mm/dia rear would be 255x30x20" and 661 mm/dia 

If the wheels and tyres you are considering are After market items check realoem to ensure that the bolt pattern and offsets are correct

Dave

[Mel w]

Thanks Dave will do👍