Keystone RV Forums - View Single Post - Cougar 5th Wheel Rim Tire Pressure Rating

Seven Gable · 02-21-2018, 04:52 PM

I did not get a definitive answer. Tire dealer felt 95 psi was acceptable, keystone referred me to rim mfg. No reply back from them. I am running 90 psi with the Carlisle Radial Trail HD's. ST235/85R16, LRF, max pressure is 95 psi, speed rated at 75 mph.

Did a 5,000 mile trip this past July to Texas with temps averaging 90 and hitting 100+ degrees. It was only when temps we're in high 90's or higher that tire temps and pressures increased to where I was concerned & I dropped my speed to low 60's. Rest of the trip I maintained 68-70 mph.

Tires did great. The 5th pulled better than the softer OEM tire. More planted and more stable. The upgrade was worth the price.

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02-21-2018, 04:52 PM	#28
Seven Gable Junior Member Join Date: Sep 2016 Location: Western PA Posts: 17	I did not get a definitive answer. Tire dealer felt 95 psi was acceptable, keystone referred me to rim mfg. No reply back from them. I am running 90 psi with the Carlisle Radial Trail HD's. ST235/85R16, LRF, max pressure is 95 psi, speed rated at 75 mph. Did a 5,000 mile trip this past July to Texas with temps averaging 90 and hitting 100+ degrees. It was only when temps we're in high 90's or higher that tire temps and pressures increased to where I was concerned & I dropped my speed to low 60's. Rest of the trip I maintained 68-70 mph. Tires did great. The 5th pulled better than the softer OEM tire. More planted and more stable. The upgrade was worth the price. Sent from my Pixel 2 XL using Tapatalk __________________ 2017 Cougar 336BHS 2017 F350 6.7L CCSB SRW Lariat Ult., 55 gal Titan Tank, B&W Companion Slider, Ford TPMS & Back up Camera