Interchangeability of alloy wheels

[Cogcog]

Just bought a 2018 C220 estate with 17 inch alloys.

I always like to have a proper spare wheel in the boot on longer trips but Merc want almost £300 for a single wheel, and then I have to gte a tyre. Looking at wheels on Ebay, the A, B, C and E class have very similar 5 stud, 5 spoke wheels.

Are they interchangeable?

[jet_noise]

Does this sort of site help?

[AC43]

Cogcog said:

Just bought a 2018 C220 estate with 17 inch alloys.

I always like to have a proper spare wheel in the boot on longer trips but Merc want almost £300 for a single wheel, and then I have to gte a tyre. Looking at wheels on Ebay, the A, B, C and E class have very similar 5 stud, 5 spoke wheels.

Are they interchangeable?

The simple answer is "not always". Although the stud pattern may be the same different MB models (and different generations of the same model) have different offsets (expressed as an ET number).

That website gives you what you need. For example if I put my car in it tells me

Front Tyre 245/40ZR 18 Front Wheel 8.5Jx18 ET 48

Rear Tyre 265/35ZR 18 Rear Wheel 9Jx18 ET 54

It also gives all the other tyre and wheel combos for that particular model.

Once you know that you can shop for something used on eBay.

[Cogcog]

Great, thanks folks.

[AC43]

jet_noise said:

Does this sort of site help?

That's a really useful site - hadn't seen it before. It could have saved me a lot of legwork the other day trying to explain to my insurance company that I'd changed from one OEM set of wheels & tyres to another.

When I said "I've gone from the Avantgarde 17's to the staggered 18's fitted to the Sport" the bloke on the line couldn't make head nor tail of it.

[jet_noise]

AC43 said:

jet_noise said:

Does this sort of site help?

That's a really useful site - hadn't seen it before. It could have saved me a lot of legwork the other day trying to explain to my insurance company that I'd changed from one OEM set of wheels & tyres to another.

When I said "I've gone from the Avantgarde 17's to the staggered 18's fitted to the Sport" the bloke on the line couldn't make head nor tail of it.

Next time

[Cogcog]

Using that code i found a perfect matched wheel for £80 (delivered). Now need a tyre.

I have a new Michelin Primacy 3 to match existing but it is 225/45/R17 instead of the 225/50/R17. OK to fit?