RLCASC

To be assured that you would be in compliance, I would recommend a call to DPS. But, after completing your test, as you noticed, no changes were made to your class C nor any additional documentation giving you permission to drive. Only after completing driving test will you then be given temporary permit to drive until license arrives in mail.

My son has had his CDL for many years and has driven the testing vehicles for others to the DPS for their driving/road test. He said not unusual for maximum tire pressure to be required on commercial vehicles.

Yes your guess is correct. The examiner thought it was under inflated, but wouldn’t accept the Michelin tire inflation chart for RVs. Apparently The CDL test requires maximum tire inflation and was holding an RV to that standard. As to the answer to your question; Tire size 255 80R 22.5. Total front axle weight is 8280 lbs, 80 lb inflation, by chart is 4300 each tire, total 8600. Tires were checked to between 80 - 85lbs.

Scheduled my road/ driving test at Wichita Falls DPS. Tester walked out looked at the right front tire and ask if I had a tire gauge. I stated I did, and was asked to check tire pressure. I had tire pressures set to Michelin RV tire chart standards. Tester stated that tire pressures had to be set at Max tire pressure of 110 lbs or driving test couldn’t continue. Once I pressured up all 6 tires to 110, Tester did safety check, had me do the standard air brake test, then proceeded with road test. Did straight line backing and about 4 mile of highway driving with two entrance and two exit ramps as part of test. After reading many of the posts, I didn’t remember anyone mentioning tire air pressure as a possible requisite. Would have had that base covered before leaving home. Passed test so all is well.