What do tire size designations mean?

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 do size markings on bicycle tires mean?

The first number is the diameter of your wheel. Sizes such as 26, 24, 20, 27.5, 29 and 700c are common tire diameters. The second number (after the X) is the width of your tire. For example, a 26 x 1.75 size means the tire diameter is 26 inches and the tire width is 1.75 inches.

What is the difference between 700c and 622?

The standard modern road bike wheel has an ISO diameter of 622 mm and is referred to as 700c (makes sense, right? /s). While the diameter for both 29″ and 700c wheels is the same at 622mm, rims made for mountain bikes are generally wider to accommodate wider tires.

What does LT mean before tire size?

If a tire size reads, LT235/75R15 104/101S, the LT indicates that this tire is meant for Light Truck use. These tires are made for light-duty and heavy-duty pickup trucks (typically ½ ton, ¾ ton, or 1-ton load capacity), SUVs and vans.

Can I use 235 tires instead of 225?

Obviously, you will need a certain kind of tire depending on how you use your vehicle. Due to this, a 235 tire might not be better than a 225 tire, or vice versa, but depending on your situation, one tire might serve you better than the other.

Can I use 215 tires instead of 225?

You might lose a bit of ultimate grip and gain a tiny reduction in rolling resistance with a 215 vs a 225, all else being equal. The car will be a little bit more resistant to hydroplaning in the rain, and have a little better traction in wet and slick conditions.

Is 26 inch the same as 700C?

A 26 inch, or a 650c wheel is about 1 inch smaller (about 2 inches smaller with road slicks) in diameter than a 700c. Some people think that because 700c wheels are the ‘standard’ for road bikes, they must be better.

What is a 28 inch bicycle tire?

Tires with diameters 622 mm and 635 mm are both classified as 28 inch. Oddly enough, tires with an inner diameter of 630 mm are classified as 27 inch. These classifications originate from the time of tire brakes. In those days, the exact outer diameter of the tire was defined by the brake.

Is a 28 inch tire the same as 700C?

28”/700C/29er The wheel sizes 28”, 700C and 29er or 29” all refer to the same rim size: ETRTO 622. The tyres can differ, but the 28”, 700C and 29er are all the exact same rim diameter. The 700 markings will be followed by the width in mm, and the 28 or 29 markings will be followed by the width in inches.

What is a 700C wheel in inches?

All road and cyclocross bikes are built with 700c wheels, which are 29 inches. However, 700c wheels are designed to accommodate a thinner tire. Many come in widths ranging from 18 to 23 millimeters, with touring tires ranging from 25 to 28 millimeters.

What is a 700C wheel size?

700C is used to refer to any tire, rim, or wheel with a 622mm BSD, but it could be on a skinny-tired road bike where the wheel has an actual diameter of only 660mm (which is actually a little LESS than 26 inches!), or a mountain bike with a wheel diameter of over 29 inches.

What does 700C stand for?

700c is the size of your bike tire, according to the ‘French system’. The “700” number is the stated diameter of the bicycle tire in millimeters. “c” is the width code of the tire (as you would see if you looked at your bike from behind or in front).

What does P mean in front of tire size?

A: TIRE TYPE The first letter in the code tells you what class of tire it is. P stands for passenger vehicle tire. LT means light truck tire, designed for vehicles that are capable of carrying heavy loads, towing trailers, or for those looking for an extra heavy duty option.

What does P or LT mean on a tire?

If there is a “P” on the sidewall, it stands for “passenger car.” This refers to the U.S. (P-metric) method of tire sizing. ” LT” stands for Light Truck, “ST” is for Special Trailer and “T” stands for Temporary, which is primarily used for small spare tires.