MHarryE
Elite Member
- Joined
- Feb 15, 2009
- Messages
- 2,970
- Location
- Northeastern Minnesota
- Tractor
- Kubota M7-171, M5-111, SVL75-2, RTV900XT & GR2120; CaseIH 1680 combine
For our combines (very large R-1 tires) the Tire & Rim Association permits overinflation for transport. The industry standard actually says for any of this type tire - R-1, R-2-0, R-3, & R-4. Reduces amount that tires deflect as the trailer goes over bumps. Our tires with 20 psi operating pressure were inflated to 35 psi for shipping with dealer pre-delivery instructions to drop to the specified pressure. This is also a possiblity for a higher than expected pressure.