whats the best tyre size to put on for 20 inch wheels?

[Zeussy]

You will find that 245/30R20 is the only size with a legal load rating (91+).

Not true. 225/35/20 Achilles ATR Sport have a load rating of 93w which is what I used to run on my VY. Legally. One of 'few' (2 or 3) tyre brands that had a load rated tyre for them.

4x 225/35/20 Achilles ATR TYRE FIT HOLDEN COMMODORE | eBay

 

[trent d]

Tha biggest that will fit under the guards

 

[sweefu]

235/30R20 is the size you need.

If you put 235/25R20, you will think the car is using heaps more fuel, and also lack power, but mainly, it will scrub and rub on your front struts.

I damaged a guard on my WH Statesman by putting the wrong tyre size on.

All this info is quite wrong, starting with the correct tyre size being 245/30R20 for a VY

 

[James]

My VY S Series 2 is not lowered at stock height. (Though i wish to lower 50mm legally?)

So what would be better the 225/35/20's or 245/30/20's?

My tyre placard states : Load index of 92 and a Speed category not less than H. Max load rating not less than 630kg.

And if i was to lower the car by 50mm what problems would this cause? Just need to roll the guards?

 

[ben315vz]

All this info is quite wrong, starting with the correct tyre size being 245/30R20 for a VY

The only part that can be wrong is that first line, because the rest is what I experienced with my own car so it can't be wrong.

But a mistake I made was "235/25R20", that was mean't to be 235/35R20.

I seriously thought something was wrong with my Statesman, I had plenty of power for a V6, then all the sudden it didn't want to go at all. I took it to another workshop and they done all the tests, fuel pressure, compression, hooked it up to a scope and a scan tool. Then when I went up a driveway and the L/H/F tyre pushed the guard out, I took the wheels off and put the standard ones back on, then it was back to normal, fuel usage was good again, power was back to normal, so I sold the tyres as VE tyres and bought new ones.