Originally Posted by yemski
So I just got some Michelin PSS 275 35 19 100Y to go on the rears of my stock rims/suspension 1M.
However I just noticed that the stock PS2 are rated at 98Y, will there be any issues mounting the PSS rated at 100Y?
No. It means that basically it can handle more weight load on each tire than the stock 98Ys. Less than 98 could be a problem and just maybe. More, no.
Their speed rating (Y) is the same and that's what matters most.