Quick Answer: How Do You Read A Rim Size?

What do the 3 numbers mean on tire size?

B: TIRE WIDTH The three-digit number following the letter is the tire’s width (from side to side, looking at the tire head on) in millimeters.

It’s the height of the sidewall measured from wheel rim to top of the tread, expressed as a percentage of tire width.

In other words, it’s sidewall height divided by tire width..

Can I use 235 tires instead of 225?

235/45 tires have a sidewall height of 105.75mm. The 225/45 tires will be shorter and will cause his speedometer to read higher than true. So short answer: Yes the tires will fit. They will, however, throw off your speedometer and will make the miles come onto the odometer faster.

Can I put wider tires on my stock rims?

To keep the suspension and speedometer functioning correctly, both the stock diameter and width of the wheels and tires needs to be maintained. As a general rule of thumb, it’s safe to fit a tire up to 20 millimeters wider than stock on the original rim.

How wide is a 275 tire?

Equivalency tableRim widthMinimum tire widthIdeal tire width10,0 Inches255 mm265 or 275 mm10,5 Inches265 mm275 or 285 mm11,0 Inches275 mm285 or 295 mm11,5 Inches285 mm295 or 305 mm12 more rows

What do rim size numbers mean?

The wheel size is the size designation of a wheel given by its diameter, width, and offset. … 5 in +35 designates a wheel’s diameter of 17 inches, width of 8.5 inches, and that it has a +35 mm positive offset (432 × 216 mm +35 mm in fully metric numbers). The most popular wheel size in the U.S. is the R15 (380 mm).

How do I know my tire size?

The two digit number after the slash mark is the aspect ratio which measures the tire’s cross-section to it’s width. If the tire size is 255/60 R16, the 60 means that the height is 60% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.

How do you read a wheel offset?

What is Wheel Offset?Zero wheel offset is when the hub mounting surface is in line with the centerline of the wheel.Positive wheel offset is when the hub mounting surface is in front (more toward the street side) of the centerline of the wheel. … Negative offset is when the hub mounting surface is behind the wheel centerline.

How do you read rim markings?

The wheels width is usually written beside the flange shape marking – e.g: 7j, 7.5j, 8.0j. The width of the wheel is basically the area shown on the photo above and it is measured in inches. In other words, the bigger the number, the “thicker” your wheels are.

What is the standard rim size?

Wheel diameter is referred to in inches. Diameter of the ‘rim’ in inches (excluding the tyre). Standard road cars generally have wheels that are between 14 inch and 19 inch in diameter.

How do I know my tire size in inches?

The first number on a metric tire is the width in millimeters. Divide this number by 25.4 to get the inch equivalent as there is 25.4 mm in 1 inch. The third number generally preceded by an “R” is the wheel diameter. The sidewall or aspect ratio are used in metric tire sizes to determine the overall height of a tire.