Im in need of a new tire and im looking at 2cts and BT-016.

My question is this. What does the ZR stand for in 180/55ZR-17?

My Current BT-015 is exactly that and ive had the BT-016s which always matched the tire size letter for letter perfect.

The 2cts however just say 180/55-17. Does this mean they will be different like a different rating or something? Im totally lost and my google search was worthless.

Thanks

 

It's the speed rating of 150+ MPH.

I believe the pilot powers and 2cts are "W" rated up to 168mph.

 

Well i dont plan on doing 168mph let alone doing it for any period of time. haha

Thanks