A 245 tire is wider than a 235 tire. When you get to a 35 series profile is when the tires start to be low profile.
The quick answer is yes you can replace 245/50-18 tyres with 235/50-18 but they will have 10mm (0.4 in) smaller overall diameter. Will only slightly effect speedo and odometer - ie speedo will read about 1.5% high.
A 245/75/16 is taller as well as wider than a 225/75/16. The height is calculated as 75% of 245 or 225. So a 205/50/15 tire the height would be calculated as 50% of 205mm . Some tires listed as the same size still have different dimensions however.
The 265 tire is wider at 10.43 inches, while the 245 tire converts to 9.65 inches.
This number indicates that your tire has a width of 235 millimeters. This number means that your tire has an aspect ratio of 75%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 75% of the width. In this case, the sidewall height works out to be 176 millimeters.
A 245 is 245 millimeters, or 24.5 centimeters, wide. The tread width is actually somewhat smaller than the tire's actual width.
If you have a smaller car and want to save on gas, you'll want a 225. If you have a larger vehicle and need more stability, you'll want a 235.
As a general rule of thumb, it's safe to fit a tire up to 20 millimeters wider than stock on the original rim. The actual width of the tire will vary depending on the width of the rim: The tire will expand 5 millimeters for every half inch (12.5 millimeters) increase in rim width.
225 is less than 9", which means a stretch fit. Technically do-able, but not best done.
This number indicates that your tire has a width of 245 millimeters. This number means that your tire has an aspect ratio of 50%. In other words, your tire's sidewall height (from the edge of the rim to the tire's tread) is 50% of the width. In this case, the sidewall height works out to be 122 millimeters.
In the example “P245/50R20 102V,” the number indicating the tire width is 245. This tells you how wide your vehicle's tires need to be to fit onto the wheels.
So “235” means that the tire has a nominal width of 235 millimeters. The following “55” is the tire wall height as a percentage of the width. So in our example, the actual height in millimeters would be just under 130 mm. Then comes the letter “R” as the identifier for radial tires.
In a word, NO. The vehicle was designed for the 255 width tire, and you will lose serious amounts of highway traction with a tire that is 20 mm narrower.
Expert Reply: Yes, a size 235/65R17 tire will fit the same wheel as a 245/65R17 size tire.
For example, a 245/45R20 has a rim width range of 7.5" to 9.5". This means that this tire size would fit the following rim sizes: 20X7. 5.
since you don't have quattro it should be ok as long as the two tires are the same in the front and rear. However, you mention 235 width and I assume they are still the 45 series then you are running on a larger diameter since 45% of 235 is larger than 45% or 225.
Wheels and tires are not interchangeable words. Tires are a part of the wheel setup. For instance, your vehicle has a set size of rims, but you can buy different sizes of tires to fit those rims, as long as the middle of the tires is the correct size.
In most cases, the answer is yes. No one can deny the aesthetic appeal of having larger tires and wheels on your car, light truck or SUV. Adding a larger tire and wheel combination to your vehicle is referred to as “plus sizing” such as a “plus one” or “plus two” fitment.
P identifies your tire as a Passenger Tire. The P stands for PMetric. If your tire size starts with LT rather than a P than it identifies the tire as a Light Truck tire. 225 identifies the tire section width, which is the measurement of the tire from sidewall to sidewall in millimeters.
235/75R16 tires are 29.9″ tall, have a section width of 9.3″, and fit wheels with a diameter of 16. The circumference is 93.8″ that translates into 675 revolutions per mile.