BC
Well-Known Member
- Joined
- Dec 7, 2014
- Threads
- 16
- Messages
- 274
- Reaction score
- 65
- Location
- Santa Cruz, CA
- First Name
- Bob
- Vehicle(s)
- 2015 Mustang GT w/PP, Guard
- Thread starter
- #16
Grimace:255/40/19 is 27" diameter.
275/40/19 is 27.7" diameter.
The middle number is the aspect ratio, aka 40% of the tread width(255 or 275 in millimeters).
Thanks for that info, yes when I first posted I didn't realize there was a difference in height, since they are both 40/19.
And earlier today I checked myself just to see how much difference and even with weight on the vehicle and close to same pressure in all tires I could easily spot over 5/8" difference in height using a tape measure.
Still trying to decide if 19x9 square is a good decision.
VIN666 - 2% towards safe side not so bad ....that would be easy to live with, unless there is a way for dealer to recalibrate.
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