00:00Installing wheel spacers on a Jeep Wrangler is about more than bolting on a thicker piece of
00:05aluminum. One of the most important things to check is stud clearance. If the factory studs
00:10extend too far beyond the spacer, they can interfere with the back of the wheel and prevent
00:14it from sitting completely flat. On this 2021 Jeep Wrangler JL, we'll measure the factory studs,
00:21check the wheel pockets, install 25mm Bonas wheel spacers, and walk through the fitment
00:26checks that matter before driving. Before starting, confirm that the spacer matches your vehicle and
00:33that the wheel can work with the spacer design. For this 2021 Wrangler, the fitment specifications
00:38we're checking are a 5x127 bolt pattern, a 71.5mm center bore, an M14x1.5 hardware. Those numbers
00:48are specific to this application. Don't assume they automatically apply to every Wrangler generation,
00:54wheel, or aftermarket setup. Park on a level surface, secure the vehicle, and follow the
01:00vehicle manufacturer's lifting and support procedure. Never work underneath a vehicle supported
01:05only by a jack. With the wheel removed, the first thing we measure is how far the factory
01:11will studs stick out past the hub face. Take a caliper or a ruler and measure from the flat
01:16hub mounting surface straight to the tip of each stud. On this Jeep Wrangler, the front studs measure
01:22about 41mm, and the rear studs come in at about 42mm. Now here is the key question. These factory
01:30studs are longer than the spacer itself. The spacer is 25mm thick. That means once the spacer
01:36is bolted on, the studs will still poke straight out through it. So before we mount the wheel,
01:41we have to check one thing. Does the back of the wheel have enough of a recess to swallow those
01:46studs?
01:46Some wheels have a deep pocket machined into the back. That pocket is built to clear the studs
01:52and the lug nuts. Other wheels have a much shallower pocket, where the pocket sits in a
01:57spot that simply does not line up with the studs. On this Wrangler's wheel, we measured the back
02:02recess at about 18.5mm. Let's do the math. With a 25mm spacer, on the front, 41-25 leaves about
02:1116mm
02:12of studs sticking out past the spacer. On the rear, 42-25 leaves about 17mm. Both numbers,
02:2116 and 17mm, sit well under the 18.5mm recess in the wheel. That means the wheel drops down and
02:29seats completely flat against the spacer, giving us 100% metal-to-metal contact between the wheel
02:36and the flange. No cutting, no grinding, and absolutely no permanent modification to the
02:42vehicle. And if you ever decide to pull the spacers off, the Jeep goes right back to completely stock,
02:47not a single trace left behind. Once the fitment checks pass, clean the hub mounting face.
02:53Position the spacer correctly on the hub. Make sure it sits flush, with no debris or visible gap
03:00between the mating surfaces. Next, install the accompanying Banas ISO-grade 10 nuts. Thread them
03:06on properly, then tighten them in a star pattern, applying a torque of 140Nm. With the spacer correctly
03:14installed, position the wheel carefully. Before tightening, make sure the wheel sits fully against
03:20the spacer and that the factory studs do not contact the wheel pockets. Start the wheel nuts by
03:25hand to avoid cross-threading. Tighten them in a star pattern. This 2021 Wrangler's wheel tightening
03:31torque is 176Nm. Don't substitute the spacer fastener torque for the wheel nut torque. They may be
03:39different, because they secure different interfaces. After installation, check all four corners. Confirm
03:46that the wheels sit correctly, the hardware is installed as specified, and there is no visible
03:51interference. On this 2021 Jeep Wrangler JL, the final setup uses 25mm Banas forged active cooling
04:00wheel spacers made from 6061T6 aluminum alloy. The important lesson isn't that every Wrangler can use
04:07this exact setup without modification. It's that you need to measure the factory stud projection,
04:13inspect the wheel pockets, verify the actual mounting surfaces, and follow the correct installation
04:19procedure for your vehicle and hardware. Measure first. Confirm clearance. Make sure everything
04:24seats correctly. Then tighten to the specified torque. Are you installing wheel spacers on a Wrangler JL?
04:31Tell us your model year, wheel setup, and spacer thickness in the comments. For more real-world
04:37Jeep fitment guides, check out our wheel spacer size comparison next.
