Best Answer

The W in 91W after the size code indicates a speed rating. While these tires are proably Z rated (speeds in excess of 149MPH) in the tire size the W indicates that the tires are rated to a higher speed. W and X were added since there were no guidelines about how much over 149 Z rated tires were good for.

W indicates a top rated speed of 168MPH.


The "91" indicates load capacity per tire! You'll get about 1350lbs per tire.


User Avatar

Wiki User

โˆ™ 2009-11-17 00:31:18
This answer is:
User Avatar
Study guides

Where I can purchase purchase HID Fargo ID card in Dubai

See all cards
No Reviews

Add your answer:

Earn +20 pts
Q: What does the 91W on your tire mean?
Write your answer...
Still have questions?
magnify glass
People also asked