Changing wheel offset

[Mars]

I wish to buy a 2nd set of wheels for my wife's Merc ML. The same wheel model is found on the R-class. I've seen a set of R-class wheels for sale and I'm considering buying them.

Thing is, the R-class has an offset of 67, whereas the ML has 60. Is this simply a case of milling 7mm off the inner face of the wheel, or are the bolt/wheel nut holes likely to be drilled deeper on the R-class too, and in milling the wheels will I leave insufficient "meat" in the bolt hole area?

Anything else to consider?

[Mars]

I might have it all the wrong way round...

http://www.miata.net/garage/offset.htm

Looks like it'd need spacers, not milling. Think I'll pass.

[GravelBen]

7mm shouldn't make much difference I'd think (especially if they're narrower as well). Plenty of people run different offsets to factory - I found you could just feel a difference between 45 and 35 on an MX5, but I doubt you'd notice on a tank like that.

Edited by GravelBen on Wednesday 1st December 10:40

[aka_kerrly]

^ i can only echo the above. 7mm is a tiny difference which will be hard to spot with the naked eye and certainly difficult to detect when driving.

In the past I have run wheels that are a inch or more wider/narrower than factory with no ill effects.

[Mars]

OK, I see your point. Holding up my thumb and finger to visualise 7mm... it's not a lot is it? The tyres are 255 so in that context they're HUGE and the 7mm differnce in offset is completely lost.

I think I'll take a punt on them. Thanks.