But they're the SAME tyre...just a bit more sidewall, so how can there be a difference in economy. 
Hmm, good point. I assumed they'd just measure one tyre of each (like one RS3, one T1R, one P6000 etc). Didn't realise they'd measure (or at least simulate) all difference sizes like that.
As for being a budget tyre....wouldn't call them that myself, how many other budget tyres have an A rated wet grip?
(11-02-2014, 05:41 PM)welshpug Wrote: sidewall stiffness probably, the taller tyre has a significantly higher load rating.
Hmm, good point. I assumed they'd just measure one tyre of each (like one RS3, one T1R, one P6000 etc). Didn't realise they'd measure (or at least simulate) all difference sizes like that.
As for being a budget tyre....wouldn't call them that myself, how many other budget tyres have an A rated wet grip?