[TR] Tire Sizes

[Randall]

The 185HR15 will be quite a bit taller than the 185/65.

The number after the slash “65” when present, indicates the ratio of sidewall height to tread width, in percent.  So for 185/65, the sidewall is only 65% as tall as the tread is wide, meaning roughly 120mm high.

When the second number is not present, the ratio is usually in the region of 80%, meaning the 185HR would be around 144mm high.  Almost an inch taller (ride height) than the 185/65.

All very approximate, and can vary somewhat from tire maker to tire maker or even tire model to tire model.

In case you’re wondering, the ‘H’ is a speed rating, meaning the tire should be able to sustain speeds of 130 mph (when loaded within the limits given elsewhere on the tire).  ‘R’ indicates radial tire construction.

--Randall

Sent from Mail for Windows 10

From: William Pugh
Sent: Friday, July 26, 2019 4:07 PM
To: TR3/6
Subject: [TR] Tire Sizes

What…if any … is the difference of 185HR-15  … and 185/65/15…??


Thanks, not trying to start a war…😉

Bill Pugh
PO BOX83
Wallace, CA
95254



Life is too short
to drive Boring Cars



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