My new wheels for my polo :)

[llai8501]

How can I check the offset used? I have the 18x7.5's

[dening]

Short Answer...
Google
[ TENZO-R ] TENZO RACING SPORTS

This says they'd be et42 which looks about right from your photos.

Long Answer...

Pull one off and it'd likely be stamped on the back of a spoke.

[Diesel_vert]

Fair enough. I assume at is because they're not wide enough or not as wide as the 225's?

A tyre's load capacity is related to how much air the tyre is designed to hold.

A smaller tyre isn't able to hold as much air, so naturally, it will have a smaller load capacity (as reflected by the smaller load index) and vice-versa.

Always keep in mind that it's the air that's supporting the vehicle - the tyre merely provides a medium in which to hold it. Think how much mass an uninflated tyre is able to support...

[llai8501]

So I et42 a 215/35 will be okay with right tyre load?

[Diesel_vert]

So I et42 a 215/35 will be okay with right tyre load?

The Polo GTI is originally fitted with tyres that have a load index of 87, which suggests that fitting a tyre with a load index of 84 (such as a 215/35 R18 tyre) wouldn't meet NSW roadworthy requirements.

As I said previously, it would be better to try a 225/35 R18 87V XL tyre first.

Considering the OE wheels have an offset of 46, an offset of 42 may be a small enough difference not to matter (which helps).

[llai8501]

Thanks for being patient and it all the info mate!

[llai8501]

Sorry for the dumb question, care there 215/35 with a load index of 87?

[llai8501]

If 215/35/18 with load index of 87 existed it would be pretty near perfect?

[Diesel_vert]

Sorry for the dumb question, care there 215/35 with a load index of 87?

If 215/35/18 with load index of 87 existed it would be pretty near perfect?

A standard load 215/35 R18 tyre will have a load index of 80.

An extra load 215/35 R18 tyre will have a load index of 84.


There is no such thing as a 215/35 R18 tyre with a load index of 87.

[dening]

You'll get it with a 225/35 though right? That's a more common fitment for that wheel.

Then you just have an aggressive offset. Which you have now anyway, but if that's only causing a small issue now with the 40 profile, a 35 profile will make that a little better.