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# did I use inflation table correctly

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Terry Colquhoun
(@Terry Colquhoun)
New Member
Joined: 4 months ago
Posts: 2
Topic starter

Hi Rodger. We're getting ready to head out for the winter in our new to us 2019 Jayco Seneca. The tires are Michelin XZE2 275/80R22.5 LRG. I loaded up and got weighed on a CAT scale. Steer axle = 8020 lbs. 8020 /2= 4010. Plus 3% = 4130.3. 4130.3 x 2= 8260.6. Michelin chart shows 70 PSI. Plus 10% = 77 PSI for steer axle tires. Drive axle = 17440 lbs. 17440 / 4 = 4360. Plus 3% = 4490.8. Times 4 = 17963.2 lbs. Chart shows 80 PSI. Add 10% for 88 PSI for drive axle tires. Did I do this correctly? I have TireMinder TPMS. Set the baseline at 77 for steer axle and 88 for the drive axle, or would 70 and 80 be the correct setting. Thanks for your help. Terry

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(@roger)
Joined: 1 year ago
Posts: 21

Good job. You followed the recommendations correctly.  RE Low Pressure warning level. Does the Tireminder tell you the level for the warning?   Is it 25% below the "baseline"?   What we would like is for the warning to go off at no lower than 70 & 80

Terry Colquhoun
(@Terry Colquhoun)
New Member
Joined: 4 months ago
Posts: 2
Topic starter

@roger  the Tireminder TPMS alarms at 15% below baseline. If I set steer axle baseline to 83, it should alarm at 70.55 psi. Drive axle baseline at 95 should alarm at 80.75 psi. These setting will raise the high pressure alarms to 15% over baseline. That shouldn't be a problem, correct? Thanks again! Terry

Ernie Powell
(@Ernie Powell)
New Member
Joined: 2 months ago
Posts: 1

Where should I get a 4 corner weigh on my class A so I know how much tire pressure is in each tire for weigh bearing

(@roger)
Joined: 1 year ago
Posts: 21

4 corner weights can be a challenge. FMCA Conventions, Escapees are 2 options. Check RVSEF web site as they travel offering 4 corner weights, Check my blog posts on the topic.

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