37 Inch Tires For 17 Inch Rims – The definitive guide to running 37-inch tires on your Jeep JL or JLU – What to consider before installing 37-inch tires on your Jeep JL
Over the years, increasingly larger tire sizes have become the norm. Years ago, a bunch of guys were riding their 33s in their Jeeps, riding Wrangler TJs, on some pretty difficult trails. With the JK and its long wheelbase, the new standard became his 35s. Today, the JL and its 37 with its powerful factory Dana 44 axles are the cars many people want to ride for their increased ground clearance, breakover angle, and performance.
37 Inch Tires For 17 Inch Rims
If you can’t see any trails in your JL, just throw on a 37 and don’t need many other upgrades. It doesn’t take much effort to roll around town on 37-inch tires. However, if you want to get maximum performance, clarity and stability on and off-road from your JL or JLU with big tires, there are quite a few things to consider. Keep reading to learn the secrets to getting the most out of your Jeep JL or JLU 37.
Post Yours Pics Of 6inch Lift With 37s
If you search for “Best JL lift for 37 year olds” on the forums, you’ll be bombarded with opinions about 2”, 2.5”, 3”, 4”…the list goes on. The lift height you choose actually determines three things. It’s the amount of suspension uptravel, the amount of droop you can achieve, and what the ride height looks like. The minimum lift height for using 37-inch tires is 2 inches, but this has more to do with the amount of bump stops you’ll actually drive. This will be explained in detail in the next section.
The higher you raise your Jeep, the higher the bump stops will be above the axle. This means when driving over bumps, potholes, etc., the suspension has more room to compress before the bump stops engage. The more uptravel, the more comfortable the Jeep will be on and off-road. For optimal ride quality, we recommend aiming for at least 4 inches of uptravel before bump stops.
Ideally, a shock or limit strap would limit the amount of sag on the axle, making it impossible for the spring to move or fall out with full articulation. In general, springs with higher lift heights have longer uncompressed lengths, so this situation is less likely to occur. Some manufacturers, such as Synergy MFG, make dual rate springs with “flex rate” coil sections that make it nearly impossible for the spring to dislodge, even in very long impacts. Sorry, XJs, but XJs often use short single-rate springs and long shocks, so you may have seen this situation happen on that platform.
There are several disadvantages if the lift height is too high. Lifting the JL higher increases the COG (center of gravity). Too high a lift height can make your Jeep unstable both on and off-road. A lower-slung Jeep is more stable in any situation.
Ram 2500 Tire And Wheel Fitment
Don’t waste your time on body lifts. This has no performance benefit and just raises the center of gravity.
The bump stop has two purposes. Prevents shocks from bottoming out (which can cause serious internal damage) and prevents tires from rubbing against fenders.
If you encounter a large bump on the road or trail that the suspension can’t properly absorb, suspension compression is stopped by the bump stop. Without bump stops, the shock absorber becomes the limiting factor during suspension compression and can damage the shock over time.
You also don’t have to run the factory Jeep bump stops, which are very hard and cause a very unpleasant bottoming experience on large bumps. Many aftermarket companies like Metalcloak and SumoSpring make softer bump stops that cushion the impact when the suspension bottoms out.
Picking The Right Size Wheel For Your Truck
No matter which shock and spring you choose, be aware of the minimum bump stop spacer height required. Many 2-4 inch lift kits require a 2-4 inch bump stop extension. You don’t want the spring to go into coil bind or for the shock to bottom out fully compressed. However, you want to set up the bumpstop spacers to use as much of the shock’s uptravel as possible. Approximately 1 centimeter of the shock shaft should be visible when the suspension is fully compressed.
Here are two things to consider when choosing a shock package for your JL: compression/extension length and shock performance.
The length of the shock absorber is directly related to the flexibility of your Jeep. As mentioned in the previous section, uptravel is limited by bump stop extension and shock body length. Downtravel is limited by the fully extended length of the shock. Maximizing these compression/expansion measurements is the key to maximizing your Jeep’s flex.
Shock performance is determined by many factors, including damping characteristics, fade resistance, and adjustability. Common shocks for the JL platform typically fall into two categories:
Adv5 M.v1forged Wheels Rims 18 Inch On 37 Tires For Ford Bronco Raptor
2.0-inch diameter internal floating piston shocks are the most common type of shock on off-road vehicles. It’s budget-friendly and offers pretty good performance per dollar. The Fox 2.0 is his most popular JL shock, offering a comfortable ride and excellent flex. 2.0 is ideal for primarily road-driven vehicles that do not see much high-speed off-road use. Due to limited oil and nitrogen capacity, it can overheat when used off-road for extended periods to control vehicle movement. These shocks are typically considered “disposable” and are replaced when they wear out.
A 2.5-inch diameter remote reservoir shock is a more performance-oriented option. They typically have a stiffer ride than their 2.0-inch counterparts, but have much better fade resistance. 2.5-inch shocks have much more oil capacity, making them ideal for long, high-speed off-road use. These shocks have a longer lifespan than the 2.0 and are rebuildable, so they don’t need to be completely replaced when they eventually wear out. Some 2.5-inch shocks are adjustable, which is great for adjusting the shock to the terrain and load you’re carrying.
These shocks have a shorter collapsed length than 2.0 IFP shocks because the internal floating piston moves into the reservoir. These shocks have more travel, and remote reservoir style shocks will give you more overall flex (if your suspension is set up to take advantage of that travel).
2.0-inch remote reservoir shocks are also available, but they often don’t have the adjustability or full performance of 2.5-inch shocks.
Door On 37s, Rpg Lift, Vision Wheels
The most important thing to consider when purchasing new wheels for your Jeep JL is the wheel backspacing. Backspacing is measured from the wheel mounting surface to the inside lip. On the 37, too much backspacing will cause the tire to rub against the inner fender when the suspension is fully articulated. If the backspacing is too small, the tire will rub against the fender and the scrub radius will increase.
Scrub radius affects the force required to steer the vehicle as the tire is pushed off the axis of rotation (ball joint). If the scrub radius is too large, the life of the wheel bearing and ball joint will also be shortened.
For his JL Rubicon with wide axles, his 37-inch to 4.5-inch backspacing is perfect for the 4.5-inch tires. For larger tires such as 40, less backspace is required. For Sport and Sahara with standard width axles, 3.5 inches of backspacing is optimal.
To support both 12.5-inch and 13.5-inch width tires, the wheel width must be in the 8.5-9 inch range. It comes standard with 17-inch diameter wheels, which you must ride on. 20-inch wheels reduce the amount of sidewall in the tire, which negatively impacts off-road performance.
X 12.50 X 16.5
If you’re serious about off-roading, beadlocks are a great upgrade. You can drive off-road at ultra-low pressures without the tire bead popping out of the wheel. I routinely use beadlocks to ride 5-10psi off-road with no problems. Without beadlocks you’re limited to around 12 psi and don’t get much traction on rocks.
When it comes to tires, there are some strong opinions. Many people are loyal to certain brands. I won’t go into detail about which brand or tires are best. Instead, we provide information on three important topics to consider when choosing a 37-inch tire: tire width, weight, and terrain rating.
Width – Most 37” tires are 12.5” or 13.5” wide. The 12.5-inch wide tires have a slightly narrower contact patch and are lighter in weight, requiring less steering effort. Off-road performance is similar for both sizes.
Terrain Rating – The most popular 37-inch tire options are all-terrain or mud-terrain. AT provides a smooth ride on the road, reduced road noise, and good traction on wet roads. MT provides better traction on loose dirt and rocks, but reduces on-road performance and increases road noise.
Maxxis Unveils 37 Inch Tire For 17 Inch Sxs Wheel
Regardless of which tire you choose, all large tires have one thing in common. That is a PSI requirement. If you use 37-inch tires, you do not need to use the same PSI as the factory 31 or 33. you would like to too
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