Given 80% while driving a Toyota Sienta (185/60 R15) on mostly motorways for 50 average miles Finally, I went full circle and went back to having Continental tyres. Was on 3 sets of Conti PremiumContact 5 for a few years till they discontinued it afterwards tried its lacklustre cousin EcoContact 6 because CPC6 isn't for my wheel size.
On the sidewall of the tyre there is a series of characters which are the tyre size, e.g. 185/60 R15, where the first number is the section width measured between the tyre sidewalls in millimetres. The second number in the tyre size is the profile height, which is a percentage of the tyre width, e.g. 55 is 55% of 205, or 112.75 mm. "R
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