A leveling kit changes alignment, tire clearance, brake hose length and driveline angles. What to check after installing one so it does not eat tires.
Leveling kits are common on South Plains trucks: a spacer or a strut extension that raises the front an inch or two to match the rear, with a bigger tire fitted at the same time. Done properly they look right and work fine. Done as a spacer and nothing else, they wear out a set of tires in short order and put stress on parts that were not designed for the new geometry.
What a lift changes
- Alignment angles. Raising the front changes camber, caster and toe all at once. Camber typically goes positive and caster drops, and the truck wanders and wears the outer tread edge.
- Suspension travel. The suspension now sits closer to full droop, which changes how the shocks, ball joints and CV joints work through their range.
- Brake hose and ABS wire length. A hose that was fine at stock height may be stretched tight at full droop after a lift, and it fails at the fitting.
- Driveline angles. On four-wheel-drive trucks, the front CV axles now run at a steeper angle constantly, which shortens their life.
- Tire clearance. A bigger tire may rub the fender liner, the sway bar, or the control arm at full lock.
- Speedometer and odometer read low with a larger tire, and the ABS and transmission calibrations assume the old size.
The alignment is not optional
Every lift, even a small one, needs an alignment afterward. The angles have moved and the tire wear starts immediately. On some trucks the factory adjustment range is enough to bring the angles back into spec. On others, particularly with a larger lift, aftermarket upper control arms or cam bolts are needed to get caster back where it belongs. A shop that installs a leveling kit and does not mention the alignment has left the most important step out. Signs you need a wheel alignment covers what the wear looks like if it is skipped.
Tire choices after a lift
The reason most people level a truck is to fit a taller tire. The tire has to clear at full lock and full compression, and a tire that fits on the lift may rub on a hard corner with a load in the bed. It also has to carry the load: a larger tire in a lighter construction can drop the load rating below what the truck needs. LT versus P-metric explains that side. And a heavier, taller tire changes the balance requirement and the brake load, both of which need attention.
What a lifted truck needs checked more often
- Front CV boots and joints on four-wheel-drive trucks, because of the steeper constant angle.
- Ball joints and tie rod ends, which work at the edge of their range.
- Tire wear pattern at every rotation, because a small alignment drift shows up fast on a large tire.
- Shock condition, since the lift changes where in the travel the shock operates.
- Brake hose routing, especially after any suspension work.
The honest version on spacer kits
A strut spacer is a cheap way to gain an inch. It works, and on a lot of trucks it is fine with an alignment. What it does not do is add suspension travel: it moves the whole range up, so the truck is closer to topping out over a dip. On washboard roads that is felt as a harsher ride and it is harder on the shocks. A proper lift with longer components costs more and rides better. Which one suits you depends on what the truck does and what you want to spend, and we will say so plainly rather than steer you.
Frequently asked questions
Does a leveling kit void the warranty?
It can affect warranty claims on parts the lift stresses, such as ball joints and CV axles. Check the terms of your specific warranty before installing one.
How much bigger a tire can I fit?
It depends on the truck, the lift height, and the wheel offset. We check clearance at full lock and full compression rather than quoting a rule.
Will the TPMS or speedometer need recalibrating?
Many trucks allow the tire size to be updated in the vehicle computer so the speedometer reads correctly. TPMS thresholds may also be adjustable. We will tell you what yours supports.
Alignment, tires and the post-lift checks are all done in our bays at 13209 Frankford Ave, Suite 29 in Lubbock. Tire replacement for the new size, and an alignment check with it. Call (806) 458-2709. Drivers make the trip in from Shallowater and across the South Plains for it.
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Tire, brake and full auto repair at 13209 Frankford Ave, Suite 29, Lubbock, TX 79424 — serving drivers from Lubbock, Wolfforth, Shallowater, Slaton, Idalou and the surrounding South Plains.