blade7
Well-known member
Monkeythree said:ETRTO allows for quite a large tolerance on width so one tyre makers 265 can end up quite different to another tyre makers 265 depending on how the manufacturer chooses to construct and mould the tyre. ETRTO also recognises that a tyre is potentially suitable to be fitted to a range of rim widths but one tyre maker might design their 265 to be optimised for a 9J rim and another might design theirs to be optimised for a 10J rim.
This is one of the reasons why OEM's ask tyre makers to mark their OE tyres with a specific designation (e.g. porsche N) to try to ensure the car retains optimum dynamics after a tyre change.
The 4 PS2's I fitted are N rated, extra cost wasn't much.