Is okay replace 2 front tires with "HR" instead of "ZR"?

[anewfoundsin]

My front tire had a blow out so I decided to change the front 2 tires and the back 2 alone. I back two tires are 225/40ZR18, 88W and the front new tires are 225/40R18 H92. Are these okay?? They all four tires are same brand: Kumbo.

[Ohiowa]

Originally Posted by anewfoundsin

My front tire had a blow out so I decided to change the front 2 tires and the back 2 alone. I back two tires are 225/40ZR18, 88W and the front new tires are 225/40R18 H92. Are these okay?? They all four tires are same brand: Kumbo.

Generally you want to match all four tires for stability and predictable handling.

That aside, you should read this article to learn what all those specifications mean: www[dot]tirerack[dot]com/a.jsp?a=AK1&url=/tires/tiretech/techpage.jsp&techid=46

Personally, I don't see why on earth a person would need eighteen-inch rims on a Corolla. It's a compact sedan, not a sport coupe. To each his own, I suppose.