Continental Tire has specially certified our wheel/tire application for 7,400 pounds, which is 9% above the original rating and is exclusively available for DBL Design. The MPT 81 is the most common tire purchased for customers that spend a good amount of time on-road as well as off-road. These tires are quiet at speed, offer low rolling resistance, and do excellent in sand, snow, and the rocks. In extreme mud the MPT 81 tends to have a hard time clearing itself.
Ford F450 and F550 2017 and newer can be fitted with 335 or 365 tires. 2011 to 2016 can only have a 335 tire installed with a 2 to 3 inch lift.
Dodge 4500 and 5500 can run a 335 tire without a lift. A 365 tire requires a lift with longer control arms. Both applications require substantial fender cutting in the front.
Chevrolet/International C4500, C5500, and C6500 will fit the 335 tire without a lift. The 365 tire requires a 3" lift. Both super single applications require fender cutting in the front.
Our SRW conversion does not require a lift kit, but it is highly recommended. The super single wheel and tire mount directly to the Ford F450, F550, Dodge RAM 4500, 5500, and C4500, C5500, and C6500 without adapters.
*Disclaimer: Continental tires requires us to state that the 33580 R 20 is only speed ready to 68 mph. That is under 100% maximum pressure at 105 psi and 100% load at 7400 pounds per tire or 14,800 pounds on the rear axle alone. The situation is very rare and very difficult to achieve however if you do please only drive 68 mph. As of the writing of this paragraph we’ve produced over 900 trucks you can easily drive any speed on the freeway with lighter loads.