수리 사례

2026. 7. 1. 작업

증상

Just wondering about this, unless the R doesn't mean "Radius" it doesn't make much sense.

처리 내용

Tires (or tyres) are marked as www/hhRdd where www is the tread width in mm, hh is the sidewall height as a percentage of width and dd is the inner diameter in inches. I.e. 245/75R16 has a width of 24.5cm, 75% (~18cm) height and 16in (~40cm) diameter. The R indicates the construction of the tire is 'radial' ply. 'Bias ply' tires, which were common before radials became the standard are indicated with a blank space. Other tire constructions exist, but are rarely used on highway vehicles. Points to anyone who can give a good reason for mixing three different systems of measurement in a single size. "The code also usually has a prefix indicating whether it for a car, truck, etc - also there seems to often be lots of non-standard suffixes for manufacturer date, load & speed ratings etc" -Wilf Great point. Much more information about tyre sizes can be found here: http://www.tirebuyer.com/education/understanding-tire-sizes-and-types