I've gotta problem, seems that the kumho 712's H rated that I ordered from the shop can't get them.. but they have the same size in Z-rated, is there a difference in feel from Z and H rated?

My car's daily driven, and I'm lowered with Eibach Pro Kit springs.

 

The Z and H ratings are speed ratings. It just means that the tires will be fine up to a certain speed (or in the case of the Z rated tires, past a certain speed). Oftentimes, the higher the speed rating, the lower the mileage rating. It can be assumed that this means the compound is softer and further assumed that they'll grip slightly better. I don't know how noticeable the difference is though within a same type of tire. Anyway, I'd say the 712s in the Z rating are perfectly fine for daily driving.

 

I know what the speed ratings mean, I'm just wondering the difference in ride quality of the different compounds. I hear the Z rated results in a bumpy ride.

 

Well, for what it's worth, I have 205/50 15" Kumho Z(W) rated on a set of rims. No complaints from me.

 

I just thought that they discontinued the 711's. I'd just get the 712's.

 

i got 712's w rated and love them