Tuscan Tyres

[asrovak]

I am about to buy a set of new shoes for my Tuscan. I was going to go for toyo's but another thread here worries me about their suitability. The question I need answering is about the tyre specs.

I have 235/40ZR18 91Y on the front
and
I have 245/40ZR18 93Y on the rear

235/245 refer to width in MM's
40 refers to the height as a %age of width
18 is the rim size
91/93 refers to the max load/speed
and Y is the speed rating
WTF is ZR?
I havnt seen it on new tyres. they seem to use just R which stands for radial

Any info greatly appreciated

Thanks

Edited by asrovak on Sunday 29th March 19:50

[tuscan_al]

I thought it was a higher speed rating again?

[rykev]

Will probably be corrected by those who know better but I beleive "Y" rating is up to 186mph and "Z" is 150 mph plus insurance companies seem happy for either to be used on tuscans,sags,T350s etc.