00:00On this 2021 Jeep Wrangler, we started by looking at 30mm wheel spacers up front and 35mm spacers
00:07in the rear. The stance was more aggressive, but the wheels sat a little farther out than
00:12the owner wanted. So we went with 25mm all around. Let's compare the two setups and see
00:18why the final fitment made more sense for this Jeep. Before changing anything, this was a stock
00:232021 Wrangler JL with its original wheel setup. The goal wasn't to build a full off-road rig
00:29or change the suspension. We wanted to see how moving the factory wheels outward would
00:34change the overall look. And that's where spacer thickness matters. A few millimeters can make a
00:39noticeable difference in how a wheel sits relative to the fender, especially when you're looking at
00:44the Jeep from the side or at a three-quarter angle. Our first option was 30mm in the front
00:49and 35mm in the rear. The idea was to give the wheels a more outward position and a more
00:55aggressive stance. But here's something worth paying attention to. A wider-looking stance isn't
01:01automatically a better fitment. The front and rear don't always look the same. And pushing the
01:06wheels farther out isn't the goal for every owner. In this case, the initial setup looked a little too
01:12far out for the owner's taste. That's why we compared it with a more conservative option instead
01:17of assuming that more spacer thickness was always better. After comparing the two options,
01:22the owner settled on 25mm at all four corners. That gave the Jeep the outward wheel position
01:29he wanted without going as far as the original 30mm and 35mm setup. The important thing here
01:35is that 25mm isn't a magic number for every Wrangler. Your result depends on your factory
01:41wheel offset, wheel width, tire size, fender setup, and how much outward movement you're actually
01:47looking for. For this particular Jeep, with its original setup and the owner's preference,
01:5325mm was the final choice. The best fitment is the one that works with your actual wheel and tire
01:59combination, not just the one that looks widest in a photo. So what does a 25mm spacer actually do?
02:05It moves the wheel mounting position outward by its nominal thickness. When the same thickness is
02:11installed on both sides of an axle, the nominal track width increases by about 50mm, assuming the
02:17same wheel centerline and no other changes. That doesn't mean every Wrangler will look the same
02:23after installation. Wheel offset, wheel width, tire dimensions, and fender design all affect the final
02:30result. That's why we don't recommend choosing a spacer just because someone else runs the same
02:35thickness. Start with your current setup, measure what you have, and decide how far you want the wheels
02:40to move outward. Before choosing a spacer for your own Wrangler, there are a few measurements worth
02:45checking. This Bonas application uses a 5x127 bolt pattern, a 71.5mm center bore, and M14x1.5 fastener
02:56threads. Those specifications need to match your actual vehicle and the spacer you're installing.
03:02Now here's the final result. 25mm Bonas forged active cooling wheel spacers on all four corners.
03:09The spacers are made from 6061T6 aluminum and use a hub-centric design for the specified application.
03:16You can see the final wheel position from the side, the front, and the rear three-quarter angle.
03:22If you're considering spacers for your own Wrangler, pay attention to the details that actually
03:26determine fitment. The wheel specifications, tire size, fender clearance, mounting surfaces,
03:33and the correct hardware. A good-looking stance is only part of the decision. The setup also needs to
03:39fit correctly. So, 30mm in the front and 35mm in the rear, or 25mm all around. For this 2021 Wrangler,
03:48the owner preferred the 25mm setup because the original option pushed the wheels farther out
03:53than he wanted. But your Jeep might be different. Drop your Wrangler's year while setup and the space
03:59or thickness you're considering in the comments. Would you run 25mm all around or go wider in the rear?
04:05Let us know, and subscribe to Banas for more real-world wheel fitment comparisons.
