The offset of a wheel is the distance from its hub mounting surface to the centerline of the wheel. If your wheel has too much of a negative offset, it could hit the fender when turning.If your wheel has too much of a positive offset, it could hit the suspension parts and frame.Wheel offset is measured in millimeters and refers to the distance the wheel sticks inward or outwards in relation to the rim mounting surface. But, what is backspace and offset, all about? Most wheels' product descriptions include backspace and/or the offset, along with width and diameter. You know the style of the wheel and the diameter, but will the wheels fit? The backspace or offset of a wheel is necessary for determining how a wheel will fit inside of your fender. Of course, you should always follow legal speed limits on roadways. Remember that this isn’t a recommended cruising speed. Speed Rating The speed rating letter corresponds to a particular speed capability based on a standardized laboratory test.įor example, a tire with speed rating “S” is rated for up to 112 mph, while a tire rated “R” is up to 106 mph. This index weight starts at 99 and goes to 7385lbs. It does not tell you the precise number but it does relate back to an index beginning with 1 and going to 150. Tells you how much weight, in pounds, the tire can support when fully inflated. This measurement is in inches, and it is the diameter. This number tells which wheel can be mounted to the tire. The ply layers generally consist of polyester, fiberglass, or steel cords embedded into the rubber itself. It is on top of these layers that the tread is applied. They are typically laid on a 40 to 60 degree angle with successive plies set on opposing angles to form a criss-cross pattern. Essentially perpendicular to the axis.īias-Ply / Cross Ply Tire - A Bias-Ply tire's body utilizes ply cords that extend diagonally from bead to bead. Radial construction means the tire's internal ply cord is oriented in a radial direction, from one bead over to the other. ConstructionsĪfter the aspect ratio, comes the type of internal construction maintaining your tires stability. The number is calculated by dividing a tire's height of the rim by its width. This number tells you how tall your tires profile is. The tire width refers to the measurement of one sidewall to the other sidewall. If you see an LT it stands for "Light Truck." T stands for "Temporary" and ST stands for "Special trailer." Width In the first position, you will see either a P, LT, T, or ST. A benefit of getting a smaller lift is they are less expensive, and it won't require many modifications. These will give you a little more clearance and room to run slightly larger tires. Small lift kits consist of 1.5 or fewer inches. If you decide road, you will need to consider the vehicle's ability to brake corner and maneuver on asphalt. Is your vehicle going to split time between the road or trail? If you choose off-road, your vehicle will have more modifications. What size lift kit do you want?įirst, you will need to decide where you are going to drive your vehicle. There is also the manufacturer's recommendation regarding the offset and width of wheels. Note that a tire size recommendation from a suspension manufacturer probably won't apply to another brand name. Start by reviewing the manufacturer's recommended lift height, or we can do it for you. ![]() You can get great results by picking your tires first and choosing the appropriate truck suspension. What size wheel do you want? What size tire do you want? Questions you may have when you get started are You know the style of the wheel and the diameter, but will the wheels fit your truck?īy far, the most useful way to determine what truck lift kits are for you and your vehicle is to consult an experienced and knowledgeable person who has worked on wheel, tires, and lift kits. Are you interested in buying a new set of wheels for your truck? We'll bet that you already spotted some cool wheels by cruising the shows, flipping through magazines, and catalogs, peeking in stores, surfing websites, and talking with your friends.
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