OK folks - after searching I am not finding much engineering data on critical dimensions to up-size tries on my 220RK.
Currently I am running ST 225/75 R15 on Lionshead 15" Jaguar rims with a 6 on 5.5" bolt pattern. Rims are 15" dia by 6" width with a center pilot hole of 4.25" I have asked GD about the pilot hole separately. Tire dimensions - Section width: 8.8", Outer diameter (when inflated): 28.3".
Currently I have the following clearances. Distance between tires 6.5". Distance from top of tire to underbelly 4". Distance form tire sidewall to frame 3.5"
I am thinking the new tires will be the Goodyear Endurance. They have two sizes available ST235/80R16 and ST235/85R16 both load range E and speed rating N
ST235/80R16
Max Inflation Pressure (PSI) 80
Approved Rim Width (in.) 6.0-7.5
Measured Rim Width (in.) 6.5
Section Width (in.) 9.3
Tread Depth (in 32nds) 8
Outside Diameter (in.) 30.8
This tire would gain me 1.25" in height, reduce clearance between tires by 2.5" to 4", reduce side clearance by .25", and reduce top clearance by 1.25" to 2.75" clearance
ST235/85R16
Max Inflation Pressure (PSI) 80
Approved Rim Width (in.) 6.0-7.5
Measured Rim Width (in.) 6.5
Section Width (in.) 9.3
Tread Depth (in 32nds) 8
Outside Diameter (in.) 31.7
This tire would gain me roughly 1.75" in height, reduce clearance between tires by 3.4" to 3.1", reduce side clearance by .25 and reduce top clearance by 1.75" to 2.25" clearance.
From what I have read I should try for 4" between tires and 4" above tires - Thoughts????
Also based on the above, going to 16* tires will probably require 1.5" to 2" lifting blocks on axle saddle to get clearance above tires
So bottom line what do you folks recommend for clearances needed after up sizing tires?
Thanks for any thoughts or corrections to my thinking.
Keith
Currently I am running ST 225/75 R15 on Lionshead 15" Jaguar rims with a 6 on 5.5" bolt pattern. Rims are 15" dia by 6" width with a center pilot hole of 4.25" I have asked GD about the pilot hole separately. Tire dimensions - Section width: 8.8", Outer diameter (when inflated): 28.3".
Currently I have the following clearances. Distance between tires 6.5". Distance from top of tire to underbelly 4". Distance form tire sidewall to frame 3.5"
I am thinking the new tires will be the Goodyear Endurance. They have two sizes available ST235/80R16 and ST235/85R16 both load range E and speed rating N
ST235/80R16
Max Inflation Pressure (PSI) 80
Approved Rim Width (in.) 6.0-7.5
Measured Rim Width (in.) 6.5
Section Width (in.) 9.3
Tread Depth (in 32nds) 8
Outside Diameter (in.) 30.8
This tire would gain me 1.25" in height, reduce clearance between tires by 2.5" to 4", reduce side clearance by .25", and reduce top clearance by 1.25" to 2.75" clearance
ST235/85R16
Max Inflation Pressure (PSI) 80
Approved Rim Width (in.) 6.0-7.5
Measured Rim Width (in.) 6.5
Section Width (in.) 9.3
Tread Depth (in 32nds) 8
Outside Diameter (in.) 31.7
This tire would gain me roughly 1.75" in height, reduce clearance between tires by 3.4" to 3.1", reduce side clearance by .25 and reduce top clearance by 1.75" to 2.25" clearance.
From what I have read I should try for 4" between tires and 4" above tires - Thoughts????
Also based on the above, going to 16* tires will probably require 1.5" to 2" lifting blocks on axle saddle to get clearance above tires
So bottom line what do you folks recommend for clearances needed after up sizing tires?
Thanks for any thoughts or corrections to my thinking.
Keith
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