Sumitomo HTR Z5 is a summer tyre made in total of 30 sizes, ranging from R17 to R17 - this particular dimension is R18, which means it fits to a 18 inch/457.2mm diameter wheel. 255/35 R18 is 50mm wider than the narrowest dimension (205) and 20mm narrower than the widest one (275). This tyre profile of 35 means the sidewall height of the tyre is 35% of the tyre width (255mm), which results in 89.25mm sidewall height. In
255/35 R18, HTR Z5 usually competes against
Ventus S1 evo3 K127, which is a tyre from
Hankook with a rating of 81%, compared to 38% of the
Sumitomo in question.
