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HDHNTER

US AIR FORCE VETERAN OEF - OIF
Military
Joined
Apr 14, 2018
Posts
352
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349
Location
SC
Ram Year
2017
Engine
5.7L HEMI
@HDHNTER How does she run with the 37's? Did you have 35's before and then switch?

That tire and rim package looks like exactly what I need.

Yes, I was running 35x12.50x20's previously & MUCH prefer the ride of 37's on 17's. The 35's were LT 10ply tires (dealer installed lift & wheel package when I bought the truck new) & they rode pretty harsh, hitting the occasional pothole was not a pleasant experience, lol. The 37's soak them up nicely. I fully expected a need to re-gear for the 37's (8spd / 3.21) but surprisingly, it's still plenty quick but that has more to do w/ the tune & Pedal Commander I'm sure. Oddly, my MPG went up a bit w/ the 37's (speedo is calibrated correctly via tuner & confirmed accurate via GPS). Averaging 15.8mpg now after 3k on this wheel/tire package where as before mid 14 - low 15mpg was average around town (as per dash readout). Assuming the mpg gain is due to reduced overall gear ratio from the larger tire diameter. Nice little mpg gain that I was definitely not expecting.

If I towed regularly a re-gear would be needed (quoted 6k for 3.92's, that front diff kit is a pricey ****) but I don't so sticking w/ 3.21's until a need arises. I like the gear spacing w/ this combo but rarely see & hold 8th. Not a big deal for me as 8th wasn't used much w/ the 35's either. All in all, zero regrets going to 37's.
 

RJL1

Senior Member
Joined
Dec 6, 2014
Posts
426
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489
Location
Jersey Shore-By the beach
Ram Year
2018
Engine
5.7 Hemi
Yes, I was running 35x12.50x20's previously & MUCH prefer the ride of 37's on 17's. The 35's were LT 10ply tires (dealer installed lift & wheel package when I bought the truck new) & they rode pretty harsh, hitting the occasional pothole was not a pleasant experience, lol. The 37's soak them up nicely. I fully expected a need to re-gear for the 37's (8spd / 3.21) but surprisingly, it's still plenty quick but that has more to do w/ the tune & Pedal Commander I'm sure. Oddly, my MPG went up a bit w/ the 37's (speedo is calibrated correctly via tuner & confirmed accurate via GPS). Averaging 15.8mpg now after 3k on this wheel/tire package where as before mid 14 - low 15mpg was average around town (as per dash readout). Assuming the mpg gain is due to reduced overall gear ratio from the larger tire diameter. Nice little mpg gain that I was definitely not expecting.

If I towed regularly a re-gear would be needed (quoted 6k for 3.92's, that front diff kit is a pricey ****) but I don't so sticking w/ 3.21's until a need arises. I like the gear spacing w/ this combo but rarely see & hold 8th. Not a big deal for me as 8th wasn't used much w/ the 35's either. All in all, zero regrets going to 37's.
Again, your truck looks tremendous! Thanks for the real world comparison between the 35's on 20's and your current 37's on 17's. I'm concerned if I get 35's on my stock rims they're gonna look small. Now the 37's on a nice 17" rim looks outstanding.

I have to admit I'm not a huge fan of chrome but I like the way my truck looks with it and actually like my rims too.

That being said I may have to copy exactly what you did, and maybe delete some of the chrome. Maybe go with Amp steps in place of my chrome side steps.
 
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healthyrx

Senior Member
TOTM Winner
Joined
Nov 29, 2021
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371
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549
Location
Oviedo FL
Ram Year
2017 1500 Sport Night
Engine
5.7 Hemi
Yes, I was running 35x12.50x20's previously & MUCH prefer the ride of 37's on 17's. The 35's were LT 10ply tires (dealer installed lift & wheel package when I bought the truck new) & they rode pretty harsh, hitting the occasional pothole was not a pleasant experience, lol. The 37's soak them up nicely. I fully expected a need to re-gear for the 37's (8spd / 3.21) but surprisingly, it's still plenty quick but that has more to do w/ the tune & Pedal Commander I'm sure. Oddly, my MPG went up a bit w/ the 37's (speedo is calibrated correctly via tuner & confirmed accurate via GPS). Averaging 15.8mpg now after 3k on this wheel/tire package where as before mid 14 - low 15mpg was average around town (as per dash readout). Assuming the mpg gain is due to reduced overall gear ratio from the larger tire diameter. Nice little mpg gain that I was definitely not expecting.

If I towed regularly a re-gear would be needed (quoted 6k for 3.92's, that front diff kit is a pricey ****) but I don't so sticking w/ 3.21's until a need arises. I like the gear spacing w/ this combo but rarely see & hold 8th. Not a big deal for me as 8th wasn't used much w/ the 35's either. All in all, zero regrets going to 37's.
Well shoot. You may have just convinced me to go 37s for my next set of tires
 

Quick_Shifter

IG: @ak_trucks_pa
Supporting Member
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4,046
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ASTON,PA
Ram Year
2012
Engine
AK Trucks Tuned 5.7
Again, your truck looks tremendous! Thanks for the real world comparison between the 35's on 20's and your current 37's on 17's. I'm concerned if I get 35's on my stock rims they're gonna look small. Now the 37's on a nice 17" rim looks outstanding.

I have to admit I'm not a huge fan of chrome but I like the way my truck looks with it and actually like my rims too.

That being said I may have to copy what you exactly what you did, and maybe delete some of the chrome. Maybe go with Amp steps in place of my chrome side steps.
Well shoot. You may have just convinced me to go 37s for my next set of tires
325/60 gentleman is the secret sauce
 
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