Product Description
Load Wheel
Specifications: 3.250 inch diameter x 6.250 inch width (3.250" x 6.250" | 3.25 x 6.25 wheel | 3-1/4 x 6-1/4 | 82.55mm x 158.75mm)
Specifications
Wheel Dimensions
| Material | Cushothane XL |
| Outside Diameter | 3.25 |
| Inside Diameter | 1.938 |
| Width Side to Side | 6.25 |
| Bore Depth | 0.812 |
| Hub Width | 6.25 |
| Bore Outside Diameter | 2.0467 |
| Tread Profile |
Frequently Asked Questions
Q: When should I choose SU 534 over SU 532?
A: SU 534 is 6.25 inches wide while SU 532 is 3 inches wide. Both have 3.25 inch diameter. Wider wheels distribute load over a larger footprint, improving stability on uneven floors and reducing bearing stress. Choose SU 534 for rough warehouse conditions or heavy duty use.
Q: What is the bore depth difference between SU 534 and SU 532?
A: SU 534 has a bore depth of 0.812 inch while SU 532 has 0.591 inch. Bore depth indicates how far the wheel hub extends into the axle mounting. These are not interchangeable—installing the wrong bore depth causes improper wheel seating and wobbling.
Q: Are SU 534 wheels heavier than SU 532 wheels?
A: Yes. SU 534 width is 6.25 inches versus 3 inches, meaning 108 percent more Cushothane XL material. This increases wheel weight, which affects steering response and bearing load. Verify your truck frame and axles are rated for the full weight of four SU 534 wheels installed.
Q: Do SU 534 wheels fit in the same wheel wells as SU 532?
A: Not necessarily. SU 534 is 6.25 inches wide compared to SU 532 at 3 inches. You must verify your truck has sufficient wheel well and fender clearance. Installing oversized wheels causes rubbing, damage, and steering lockup at full lock.
Q: Is SU 534 compatible with narrow axles designed for SU 532?
A: No. The wider wheel requires a longer axle to support the outer rim and bearing load. Forcing SU 534 onto a narrow axle concentrates stress on the bearing and axle, causing premature failure. Always match wheel width to axle length.