What is the difference between 225 75R15 and 215 75R15?
They MAY be interchangeable. There’s a “height to width aspect ratio” that is part of the equation too. My car has a 225/45R17 tyre, meaning it has a 17″ rim, a 45% profile (height is 45% of the width) and 225 mm wide.Apollo Apterra HT 215/75 R15 100S TL Specifications 215 is the width in millimetres of the tyres cross section. Aspect Ratio, it is the ratio of the sidewall height to the cross section width.
What’s the difference between 75R15 and 75D15 tires?
The D in 75D15 stands for diagonal or bias ply, indicating that the tire’s internal fabric layers are diagonally arranged, while the R in 75R15 stands for radial, meaning that the tire’s internal fabric layers are arranged radially from the center. The letter R means the tyre is a radial construction.Radial tyres are better at dispersing heat, thanks to their flexible sidewalls. This makes them ideal for long-distance travel. Bias ply tyres, however, can retain heat, especially when driven at high speeds for extended periods. That’s why they’re often limited to short-distance, heavy-load tasks.Radial tires offer lower fuel consumption, better traction, increased flotation and improved cut resistance in the tread.
Which tyre size is better?
You can switch to larger car tyres but experts recommend upgrading within 3% of the original diameter of your car tyres. Switching to unnecessarily large tyres will not only affect your car’s mileage but may also impact handling and ride quality. Some manufacturers will advise against changing tire sizes due to the strain they can place on the powertrain and suspension. In some cases, using non-standard tire sizes or lift kits may void the vehicle’s warranty, particularly if these modifications result in mechanical issues.