What is the difference between 245 45r18 and 245 40R18?
What is the difference between 245 45r18 and 245 40R18?
In short, the difference in those 2 sizes is that one has a sidewall height that is 45% of the 245mm section width. The other sidewall is 40% of the 245mm width. Mathematically, that means that the “40” tire is 12.25mm less tall (on a radius, not diameter), or an overall 25mm (1 inch) in diameter.
How tall is a 225 40R18?
225/40R18 tires are 25.1″ tall, have a section width of 8.9″, and fit wheels with a diameter of 18. The circumference is 78.8″ that translates into 804 revolutions per mile.
How wide is a 245 40R18?
245/40R18 tires are 25.7″ tall, have a section width of 9.6″, and fit wheels with a diameter of 18. The circumference is 80.7″ that translates into 785 revolutions per mile.
What size tire is 245 40?
Tire Info and Size Chart
| Budnik Tire Chart | ||
|---|---|---|
| 245/40-17 | 24.7 | INVO |
| 245/45-17 | 25.7 | INVO, NT01 |
| 245/50-17 | 26.7 | |
| 255/40-17 | 25 | NT05,NT555,NT01 |
What’s the difference between r18 and zr18 tires?
The difference is in the way the speed rating is displayed. For these tyres, if the speed rating is above 149mph, then a ‘Z’ must appear in the dimension part of the notation, as well as the actual speed rating shown elsewhere. The ‘Z’ is a quick way to see that the tyre is rated for over 149mph.
How tall is a 245 50R18?
245/50R18 tires are 27.6″ tall, have a section width of 9.6″, and fit wheels with a diameter of 18.
What does 225 40R18 92w mean?
Tyre Rim Diameter Rim Diameter. 225/40R18 92Y. The two digits located after the R (on a radial tyre) show the size of the wheel rim that the tyre can fit onto. It also shows the diameter of the tyre from each bead that sits on the edge of the wheel.
What does 40z mean on a tire?
SPEED RATING Z While it nearly always means a high performance tire for high-performing sports cars, “Z” may actually appear in the middle of a tire’s size information. When it does, it represents either a maximum speed of more than 149 mph (240 kph) or 186 mph (300 kph).
What does 40r18 mean?
This number means that your tire has an aspect ratio of 40%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 40% of the width. In this case, the sidewall height works out to be 90 millimeters. R. This letter denotes how your tire was constructed.
What does R mean on tires?
radial tire
The first three numbers (205) indicate the width of the tire tread in millimeters. 60 is the aspect ratio or profile of tire. This is indicated in percentage of the tire width. “R” stands for the construction method of the tire indicating the tire is a radial tire.
What does R mean in tyres?
radial tyre
The tyre designation R, which comes before the rim diameter marking, means that this tyre is a radial tyre. Other examples are “B” for Bias-ply or “D” for Diagonal construction. Radial tyres are the most common tyres on the road today.
How wide is a 255 50R18?
255/50R18 tires have a diameter of 28.0″, a section width of 10.0″, and a wheel diameter of 18″. The circumference is 88.0″ and they have 720 revolutions per mile. Generally they are approved to be mounted on 7-9″ wide wheels.
