Racing tire sizes
05-20-2006, 06:02 AM
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I sometimes see some tire figures for racing cars like: m3 gtr, 320si WTCC car and so on, that i can't understand. Those are not usual figures like 245/40 R18 or what we are familiar with but more like this:
This is for the BMW M3 GTR race version:
Michelin racing tires in the dimensions 27/65-18 (front) and 27/68-18 (rear)
Can anyone explain this?
Thanx.
This is for the BMW M3 GTR race version:
Michelin racing tires in the dimensions 27/65-18 (front) and 27/68-18 (rear)
Can anyone explain this?
Thanx.
05-20-2006, 06:33 AM
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My Ride: G30 M550i
Model Year: 2018
The sizes you mention describe the tire's dimensions in centimeters.
For example, the 27/65-18 would measure 270 millimeters in width and 650 millimeters in diameter. The 18 is the rim diameter in inches (just like the "normal" tire size nomenclature.)
For example, the 27/65-18 would measure 270 millimeters in width and 650 millimeters in diameter. The 18 is the rim diameter in inches (just like the "normal" tire size nomenclature.)
05-20-2006, 07:34 AM
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Originally Posted by Rudy' post='285259' date='May 20 2006, 05:33 PM
The sizes you mention describe the tire's dimensions in centimeters.
For example, the 27/65-18 would measure 270 millimeters in width and 650 millimeters in diameter. The 18 is the rim diameter in inches (just like the "normal" tire size nomenclature.)
For example, the 27/65-18 would measure 270 millimeters in width and 650 millimeters in diameter. The 18 is the rim diameter in inches (just like the "normal" tire size nomenclature.)
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