Tire Pressure for a 5.25 x 21 ?
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Topic author - Posts: 19
- Joined: Wed Aug 11, 2021 9:08 pm
- First Name: Mark
- Last Name: Stewart
- * REQUIRED* Type and Year of Model Ts owned: 1926 Model TT Ford Truck
- Location: Bakersfield
- Board Member Since: 1999
Tire Pressure for a 5.25 x 21 ?
The front tires on my 1924 TT Truck are 5.25 X 21 . What is the proper tire pressure? The rear tires are 6.50 X 20 and say 50 LBS single and 60 LBS dully. Thanks Mark
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- Posts: 2814
- Joined: Sun Jan 06, 2019 5:25 pm
- First Name: George
- Last Name: House
- * REQUIRED* Type and Year of Model Ts owned: ‘10 Maxwell AA, ‘11Hupp Model 20, Two 1914 Ford runabouts, 19 centerdoor, 25 C Cab,26 roadster
- Location: Northern Caldwell County TX
- MTFCA Life Member: YES
- Board Member Since: 1999
Re: Tire Pressure for a 5.25 x 21 ?
Front tires 32 PSI
A Fine is a Tax for Doing Something Wrong….A Tax is a Fine for Doing Something RIGHT 
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- Posts: 397
- Joined: Sun Jan 06, 2019 2:36 pm
- First Name: Dennis
- Last Name: Prince
- * REQUIRED* Type and Year of Model Ts owned: 1)24 touring 2)25 TT's 1)26 roadster 2)26 tourings 1) 26coupe 1)27 funster 1)28 A pick up
- Location: Madras Oregon
- Board Member Since: 1999
Re: Tire Pressure for a 5.25 x 21 ?
I run 36 psi in 525/21s on my roadster on wood wheels and 20 psi on my Funster (weights next to nothing) on wire wheels.
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- Joined: Sun Jan 06, 2019 10:56 am
- First Name: Dan
- Last Name: Treace
- * REQUIRED* Type and Year of Model Ts owned: ‘12 open express,'23 cutoff, '27 touring
- Location: North Central FL
- Board Member Since: 2000
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Re: Tire Pressure for a 5.25 x 21 ?
Tire pressures recommended by Ford on the T cars and TT trucks, for the 21" balloon tires.
Text above the chart reads to be safe and add 2 or 3 more psi
Text above the chart reads to be safe and add 2 or 3 more psi

The best way is always the simplest. The attics of the world are cluttered up with complicated failures. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford
Don’t find fault, find a remedy; anybody can complain. Henry Ford