8j tyre size meaning

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.

How wide is a 8J rim?

See attached picture, an 8J rim is 203mm wide so a 195/50R15 tyre will fit fine with a very minimal stretch as it's designed to fit a 7J rim. That means the 205/50R15 will be the correct fitment for the rim as it's the same width as the rim.

What does J in tire mean?

The letter “J” means a tyre bead profile. This is the marking used to define the wheel collar profile you should never ignore.

What does 6.5 J mean on wheels?

When you're looking into the sizing of alloys you'll see it shown like this: 15 x 6.5J. The first half (15) is your wheel diameter, simple enough, while the second half (the 6.5J) is the wheel width. By width we mean the section between the mounting flanges on the wheel.

Can I put 255 on 8J?

yes. They will fit but are a bit wide.

Will 225 tyres fit 8J rims?

Its the most natural size and although not much difference it give you more contact patch on the road and if you look at other manufacturers like Subaru, lotus and Mitsubishi they all put 225's on 8J rims.

What size tyre fits a 7J rim?

In 7J x 17 H2 ET38, 5x112 LK it is 7 inches. Now you have to know that a rim of this width fits on a tyre with a width of 195 to 225 mm. 205 up to 215 mm are ideal. Behind the "Y" for the rim flange's type and the "x" for well-base rim the rim diameter of 17 inches is given.

Can you fit 225 tyres on 7J rims?

The rule of thumb is the rim needs to be 90% of the tyre width with a +/- 1/2in leeway either side. So a 225 should ideally be on an 8in rim but 7.5in or 8.5in would be OK.

What does 8.5 J mean on a wheel?

How to measure alloy wheel size – what do all the numbers mean? Typically, the alloy wheel size conforms to the following format: 20 x 8.5J. The first number, in this instance 20, is the wheel diameter. The second part, 8.5J, is the wheel width.

What does J and JJ mean in wheels?

Helpful Expert Reply: The "JJ" that you mentioned finding on the wheel size listed for the units mounted to your trailer refer to the contour of the bead seat on the wheel, essentially its shape ( "J" indicates the shape of the letter J).

What does ET45 mean?

ET wheel numbers can be either positive or negative to reflect the values of wheels with either positive offsets or negative offsets. For example, an ET45 wheel measurement has a positive offset of 45mm, which means that the mounting face is 45mm in front of the centre line.

How do you read tire sizes?

The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be.

What size wheel will a 255 tire fit?

255/70R17 tires are 31.1″ tall, have a section width of 10.0″, and fit wheels with a diameter of 17. The circumference is 97.5″ that translates into 650 revolutions per mile. As a rule, they can be mounted on the wheels with 17″ x 6.5-8.5″ rim width.

Can I fit 185 tyres instead of 165?

Yes you can fit it. It fits perfectly provided you change the rim/alloys to 15 inches. It will be extra cost for you. If you are changing rim/alloys to 15 inches than it's fine otherwise you can fit 185/70R14, 195/65R14 and 205/60R14 with the existing rim/alloys.

What is my tyre size?

What is the tyre size for my car? You can locate it inside the driver's door on your car, inside the fuel flap or inside the glove compartment. Alternatively, you can consult your vehicle documentation and tyre manufacturer specifications. You can also find the current tyre size on the sidewall of your tyre.

What size tyre fits a 7J rim?

Can you fit 225 tyres on 7J rims?

The rule of thumb is the rim needs to be 90% of the tyre width with a +/- 1/2in leeway either side. So a 225 should ideally be on an 8in rim but 7.5in or 8.5in would be OK.

What does 8.5 J mean on a wheel?

What happens if you increase tyre size?

Upgrading to larger tyres, or tyre upsizing, has several advantages – it improves the car's handling and cornering abilities, and offers better stability. Off-road vehicles use bigger tyres to gain some ground clearance and improve the footprint, thereby providing better grip.

Does tyre size affect fuel consumption?

Wider tyres have more surface area and hence more friction with the tarmac – resulting in higher rolling resistance than the tyres size recommended by the vehicle manufacturer. This means, your car's engine has to work harder to maintain the cruising speed, which increases fuel consumption.

Can I upgrade my tyre size?

For safe tyre upsizing, you must ensure the OD (overall diameter) of the new tyres remains within the permissible tolerance, which is only up to 3% of the OD of stock tyre. For example, if the OD of the stock tyre is 24.47 inches, then the OD of the new tyre should not go beyond 25.20 inches.

What tyre numbers mean?

The important number on the side of your tyre - the indicate the size, profile and the weight and speed ratings of your tyre. These number represent, in order, the section width (225), aspect ratio (45), construction (R), rim diameter (19), load index (92) and speed rating (W).

What do tyre size numbers mean?

Do all 4 tyres need to be the same?

Primarily, you should avoid mixing different tyre brands and different tread patterns. There are rare exceptions for approved mixed-tyre fittings, but in general, manufacturers do not recommend tyre mixing at all.