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| | | | Joined: Aug 2019 Posts: 3 New Guy | | New Guy Joined: Aug 2019 Posts: 3 | Hello
Looking for any information on tires. My truck has 7.5x20 all the way around.
I can get 9.00x20 local for $80 but don’t know if they will work. Only going to put them on the back.
Any advice would be appreciated.
Thanks
1942 Chevy 1 1/2 Ton fire truck
| | | | | Joined: Mar 2010 Posts: 92 'Bolter | | 'Bolter Joined: Mar 2010 Posts: 92 | 7.50 to 9.00 might get a little tight and allow the tires to rub together when mounted up on the original rims. I would do some measuring first.
1949 Chevy 4400 216
| | | | | Joined: Jun 2005 Posts: 168 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 168 | I know a lot of people put 8.25x20 on the rears. I'd like to know if someone has put 9.00x20 on the rear as well
Liquidated my projects
Now looking for a decent '47-'55.1 3100, 3600, or 3800
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | What truck? What wheel bolt pattern? Since you are talking about split rims of some sort, have you checked around locally to see if anyone will mount and dismount them? Have you considered getting tubeless wheels for your new tires?
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Aug 2019 Posts: 3 New Guy | | New Guy Joined: Aug 2019 Posts: 3 | Thanks everyone for the replies.
I’ll look into the 8.25x20
1942 Chevy 1 1/2 Ton fire truck
| | | | | Joined: Mar 2004 Posts: 6,214 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,214 | Welcome to the Bolt  Chicago Tire carries 7.50x20 Highway tires. http://chicagotireinc.com/7.50-20-tires/Nebraska Tire has 8.25x20 Mud/Snow Lug tires. https://nebraskatire.com/truckI looked for years to find 7.50x20 Mud/Snow Lug tires for a fire truck project and never did find them...highway tires just wouldn't look right on the rear of a fire truck to me. If it were me I'd put 7.50 Highway on the front and 8.25 M/S on the rear. The 7.50's are about 36.5" tall and the 8.25's are about 39" tall, so the rear tires will change the final gear ratio if you go taller. Mike B 
Last edited by Mike B; 08/26/2019 10:48 PM.
| | | | | Joined: Nov 2012 Posts: 27 'Bolter | | 'Bolter Joined: Nov 2012 Posts: 27 | https://simpletire.com/power-king-7.5-20-sh720-tires These have been as low as $500 for set of four in the last few months... Right now they're at $863 for 4. Think I'll wait.
Last edited by 69Cuda; 09/16/2019 9:49 PM. Reason: deleted political comment.
| | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | If you have 7.25 x 5/10 bolt pattern, 22.5 wheels are available, fit, 9" tires, wheels are on late '50's farm trucks.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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