新闻资讯

Maintain the correct air pressure that meets the requirements while driving

Release time:2026-03-26


The ratio of the height to width of a tire. The flatter the tire, the better its performance and the higher its cost.

1. ISO International Quality Certification Representation Method

250 / 60 R 15 89 H

250 tire width (mm), 60 flatness ratio, R-radial structure, 15 tire inner diameter (in), 89 high load, H-high speed

2. DOT US Representation Method

P 195 / 75 R 14 92 S

P-Model abbreviation (Bus PC), 195 Tire width (mm), 75 Flatness ratio, R-Meridian structure, 14 Tire inner diameter (in), 92 High load, S-High speed

Note: Flatness ratio: The ratio of the height to width of a tire. The flatter the tire, the better its performance and the higher its cost.