00:00Actual measurements for this 2013 Lexus IS250 showed a front wheel gap of 25mm and a rear gap
00:08of 27mm. The owner specifically chose 20mm and 25mm spacers, and the final result speaks for
00:16itself. So, what size wheel spacers do you need? First, the measurement itself. Straight edge
00:22against the fender lip, level. Measure from the tire's outer edge to the fender. Do it on level
00:28ground. At ride height, wheels straight. Front, 25. Rear, 27. Right both down, front and rear are
00:36almost never the same, which is why front and rear spacers shouldn't be the same either. Now the part
00:42everyone skips. Your gap number is a static number, your suspension is not. Hit a bump at speed, the
00:49tire travels up into the fender. Full steering lock, the front tire swings toward the liner. If the wheel
00:55spacers are too thick, the tires may rub against the fenders. When selecting the thickness, you can
01:00generally base your decision on personal preference. If you prefer the look of wheels protruding slightly
01:06outward, you can increase the spacer thickness, though it is best not to exceed 5mm. If you prefer
01:12a flush look where the wheels align with the edge of the fenders, you can use a precise thickness based
01:18on actual measurements. And if you prefer a more understated style, you can leave some clearance.
01:22The owner of this 2013 Lexus IS250 preferred a flush look with a slight inset, so they chose 20mm
01:30spacers for the front wheels and 25mm spacers for the rear. This setup achieves a flush appearance
01:37without protruding excessively, while also ensuring the tires do not rub against the fenders.
01:42Thickness is only half the job. Check the hub, pitch circle diameter, center bore diameter,
01:48and thread size. A proper spacer seats on the hub, hub-centric, so the hub carries the load,
01:55not the studs. If the bore doesn't match, you get vibration no matter how good the spacer is.
02:01Installers who've measured over 100,000 cars will tell you. The hub check is what separates a clean
02:06install from a comeback. The specifications for your IS250 are as follows. A 5x114.3 bolt pattern,
02:15a 60.1mm center bore, and M12x1.5 wheel bolts. As long as these three parameters are correct,
02:23the wheel will be precisely centered on the hub and positioned accurately. If there is any error,
02:28the entire weight of the vehicle will rest on those five bolts. That is the difference between
02:33safety and a potential hazard. This is the result of following the measure. Select thickness and verify
02:40data procedure. Both the front and rear wheels sit flush with the wheel arch edges, with no rubbing
02:46occurring. Whether the steering wheel is turned to full lock or the vehicle is driven over bumps.
02:51This illustrates the difference between guessing specifications and determining fitment based on
02:57engineering calculations. This vehicle uses Bonas forged active cooling Lexus IS wheel spacers,
03:03but the same method applies to any high-quality hub-centric spacer.
