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Tire Size55 #2435773
01/16/18 05:37 PM
01/16/18 05:37 PM
Joined: Apr 2006
Posts: 330
Indiana
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Crabra Offline OP
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Crabra  Offline OP
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Joined: Apr 2006
Posts: 330
Indiana
I have 25560R15 rear tires on my duster.Gear ratio is 355.If I switch to a 23560r15 wil I lower or raise the actual ratio

Re: Tire Size55 [Re: Crabra] #2435790
01/16/18 05:57 PM
01/16/18 05:57 PM
Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge Offline
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68Cbarge  Offline
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Posts: 3,535
Canuckville
2556015 is 27 inches tall.
2356015 is 26.1 inches tall
You will be lowering your final drive.
Your final drive of 3.55 will make it feel like a guestimate of 3.68 or more.
Quicker off the line,but highway RPM's will increase slightly by 50-100RPM's.
Hope this helps.

Last edited by 68Cbarge; 01/16/18 06:04 PM.

'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
Re: Tire Size55 [Re: 68Cbarge] #2435860
01/16/18 07:56 PM
01/16/18 07:56 PM
Joined: Apr 2006
Posts: 330
Indiana
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Crabra Offline OP
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Quicker off the line is what i am looking for.Thanks

Re: Tire Size55 [Re: Crabra] #2435906
01/16/18 09:13 PM
01/16/18 09:13 PM
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Posts: 5,442
Indiana
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YO7_A66 Offline
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Indiana
Going from a 255 to a 235 is shorter, but it is also less tire on the road for traction. You may not get off the line quicker just because you may loose traction.
You may be better off with a stickier 255.

Last edited by YO7_A66; 01/16/18 09:14 PM.

1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: Tire Size55 [Re: Crabra] #2437661
01/19/18 08:56 PM
01/19/18 08:56 PM
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Posts: 5,385
Pikes Peak Country
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TC@HP2 Offline
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Pikes Peak Country
I doubt it is a significant enough difference to be felt and may only be measurable by a stop watch.







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