This allows you to fit big tires and higher lifts easier. In the case of an SFA or LIVE axle, the axle is not physically attached to the chassis. When lifting any IFS truck, the front suspension configuration determines the complexity of the upgrade. Once removed, and a 20+ offset aftermarket wheel is fitted you should be able to get the 33” tires to fit comfortably.įitting 33-inch Tires on a Stock Jeep JK – HOW TO GUIDE Big lifts on an IFS Truck They are quite a PITA to remove so be prepared. These will need to be removed/modified first so as not to damage the new tires. The Ranger T6 crash bars protrude from the wheel well and the bigger 285/70/17 tire makes contact. How much lift to fit 33” Tires on a Ford Rangerį you want to fit a larger 33” tire without a suspension lift, there is some modification needed. Speedometer readingīelow are the actual differences between the stock 16” tire and the upgraded 285/75/16 Measurement The below table will give you an indication of how the speedometer reading is affected from a 265/70/16 to a 33”. The increase in tire circumference means the actual speed will be higher the faster you travel. This might throw out your speedometers reading slightly. In the case of 33” tires, the diameter will be larger and have an increase in the aspect ratio. When you upgrade from a stock tire to one with a taller aspect ratio (Sidewall), increasing the wheel circumference, your speedo can be thrown out. Will the 285/75/16 throw out your speedo? When you squeeze oversized tires into a wheel arch without lifting the truck, you’ll need to trim away a lot of the inside fender and arch plastic to allow the tire to tuck behind the arch when turning and flexing off-road. A wider tire will require more wheel arch clearance and room to move when flexing off-road and when turning at full lock. They usually need some trimming, depending on the tire and vehicle.įender trimming goes hand in hand with backspacing/Wheel offset as well as how wide the tire is. Look out for the inner guard pinch weld and inside of the fender flare. So get familiar with your Stanley knife and cutter and do some trimming of those wheel arch/guards where they are making contact. In many instances, there are a few plastic sections on the inner fender guards that need to be trimmed away since they will scrub at full articulation. When it’s positive the imaginary line is more towards the front and negative means the mounting surface is more towards the rear of the rim creating a deep dish effect. You get positive and negative offset wheels. Offset is measured in mm and generally refers to how your wheels sit inside the wheel wells. There is a fine line between keeping the tires in the guards and preventing scrub on arches, UCA, Brake calipers, etc. When you decrease backspacing, you gain more inside wheel clearance. What is the difference/meaning of backspacing vs Offset?īackspacing is the distance measured from the hub mounting surface to the inside edge of the wheel. (When the tires stick out of the fenders) The problem here is, you don’t want to go too negative offset on the wheels since you risk excessive wheel “poke”. It’s been widely agreed that 16×8 is recommended option. Wheel offset or backspacing is a factor that gets little consideration, and it can create complications if you’re not sure exactly how much brake caliper clearance is required. How much lift do you need for 33 inch tires? FITMENT GUIDE Wheel Offset Let’s now look at a few factors to consider when fitting 33” tires on your truck. There are however a few limitations, especially when it comes to IFS (Independent Front Suspension) 4WD vehicles. This is especially important for overcoming obstacles in an off-road situation. Fitting 33 inch tires on your truckīigger, taller tires are the single most effective method of gaining improved ground clearance. One way to find out the exact diameter of a tire is by going to the tire manufacturer’s website and checking the manufacturing specs on that specific tire and then comparing “apples with apples”. This means 33-inch tires can be wider by 11 1/2 or 12 1/2 inches in width. Meaning some are smaller than 33″ and some are larger, depending on the brand. Two different 285’s can actually vary in true diameter. Let’s see what that means Metric vs Millimetersīecause each tire manufacturer uses their own molds, and there’s no set industry pattern, the 285/75/16 is usually the accepted metric size for 33’s, even though the physical diameter of the tire can vary from manufacturer to manufacturer. Metric tire sizes can be a bit more complicated when it comes to understanding what size they really are. How much lift to fit 33” on a Jeep WranglerĪre 33-Inch Tires the same as 285’s (Metric Vs MM)Īs mentioned, 285 and 33 are referring to two completely different measurements. .How much lift to fit 33” Tires on a Ford Ranger.Are 33-Inch Tires the same as 285’s (Metric Vs MM).
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