Yup they are Z rated and obviously ratings don't go higher than 'Z'. I'mm pretty sure Z speed rated tires are rated at 175+. There is a website that has all of the speed rating listed but I don't remember the URL.
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'97 Laser Red GT Coupe
Stock 2V (Pulled Silencer)
4R70W Automatic
Ripped off a BLISTERING 15.37@90MPH
With a 2.21 60ft
Just Installed- K&N Air Filter
Coming Soon......
-4.10's
-Flowmaster A/T or Magnapack Cat-Back
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