What does 92W mean on tires?
A: 92w the first two numbers 92 refer to the load rating and the letter w refers to the maximum speed rating. W=168 mph (extremely high! Z means that the tyre can go above 150MPH. Elsewhere on the tyre will be the maximum speed rating of the tyre, it could be a H, V, W or Y.Some manufacturers will insert a “Z” in the middle of the tire size description (right after the aspect ratio) when the tire is rated at “W” or “Y. And if a tire is rated in excess of 186 mph (300 kph), manufacturer’s usually will list a “Z” within the size description, per industry standards.But the development of faster vehicles brought us two new speed ratings: W and Y-rated tires, both of which are rated for higher speeds than the Z despite their earlier place in the alphabet. These speed ratings provide a more precise indicator of a high-performance tire’s speed over 149MPH.The W rating replaced what was once Z, which was anything above 149 at the time, and is now limited to 168 mph. So if the Z rating is still used, it must be in conjunction with the W as the limit.
What’s the difference between 92W and 92Y tyres?
Confusingly, W-rated tyres are rated at a higher speed in excess of 168mph. Y-rated tyres are rated in excess of 186mph. See the full list below. Tyre speed ratings should be matched to the official top speed of your car. A: The letter denotes the speed rating, or how fast the tires can safely rotate (“Z” means 149+ mph). This percentage compares the tire’s section height with the tire’s section width.ZR basically means the tyre is adapted for speeds above 149 mph. ZR tyres includes the speed ratings V(149mph), W(168mph) and Y(186mph).This means that a tire with a V-rating, for example, can be driven at 149 miles per hour until it wears out! Less frequently seen ratings are Q 99 mph and R 106 mph- used in some light truck tires. The W rating replaced what was once Z, which was anything above 149 at the time, and is now limited to 168 mph.Meaning of ZR Speed Rating in Tyres While not a rating by itself, the ZR designation indicates that the tyre is rated for speeds exceeding 149 mph (240 km/h). It needs a letter rating to define it as for example, ZR270, meaning speed rating for 270km/h.
What does 225 40R18 92W mean?
ZR means the tire can handle speeds over 150mph. R18 is the rim diameter the tire fits on. W is the load and speed rating. A: The difference between the R rated and ZR rated tires is that the R rated tires have a maximum speed capability above 240 km/h (149 mph), while for ZR tires the maximum speed capability may be above 300 km/h (186 mph). The tires will fit on your vehicle as long as the size is 275/40/20.The letters ZR on the sidewall relate to a tyre’s speed rating, which in this case is 150mph. That means it should not be driven at speeds in excess of 150mph (240kmph) – of course, where such speeds are even legal! Before 1990, ZR was used for high-performance tyres.ZR means the tire can handle speeds over 150mph. R18 is the rim diameter the tire fits on. W is the load and speed rating.ZR tires are designed for high-speed performance, capable of speeds over 149 MPH, while R tires are built for everyday driving with speed ratings up to 106 MPH. ZR tires offer superior grip and handling but have a shorter lifespan of about 48,000 miles compared to R tires’ 65,000 miles.
What does 92h mean on a tire?
Load Index (92): The maximum load each tyre can carry when inflated to its maximum safe pressure. This does not mean the tyre can support 92kg – but that the index is 92. You may also find this information in your vehicle’s manual. Speed Rating (H): The maximum speed at which the tyre can carry the load safely. Tires having a maximum speed capability over 149 MPH may have “ZR” in the size designation. Tires with a maximum speed capability over 186 MPH are required to include “ZR” in the designation.In this case, “ZR” designates a maximum speed capability of more than 149 mph, while W indicates that the tire’s maximum speed is 168 mph. But unless you own a super-sweet sports car, you probably aren’t in the market for Z-rated tires.For example, 205/55 R16 91W denotes a W speed rating, which means the tyre can handle speeds of up to 168mph (assuming it is not overloaded).Why do tyres have speed ratings? So, what does tyre rating W mean? Essentially, it means that your tyres will be able to handle a specific maximum speed while carrying a load. Typically, tyres with a W rating can handle a maximum speed of 168 mph.
What is the tyre pressure for 225 40ZR18 92W?
The recommended tyre pressure for 225/40 R18 tyres can vary slightly based on the manufacturer and vehicle. However, a general guideline is to maintain the pressure within the range of 32 to 35 PSI (pounds per square inch). Ideal Tire Pressure Tire pressure between 32 to 35 PSI is suitable for most vehicles. However, one can go as low as 20 PSI (although that is not recommended). Anything below 20 PSI is considered a flat tire. PSI stands for pounds per square inch.Tire pressure increases when the tires are used, and for this reason, following the vehicle and tire brands’ recommendation is crucial. Typically, if the recommended pressure levels are 35, then the tires should not use more than 40 psi. More than that will result in the before mentioned problems.