I just realized I don't have a single photo of my '97 TJ when it was new or still on its 30" tires. I'm shocked.Pics or it never happened to you too. I need to see JerryB with 30" tires on a Jeep. I don't believe it.
I just realized I don't have a single photo of my '97 TJ when it was new or still on its 30" tires. I'm shocked.Pics or it never happened to you too. I need to see JerryB with 30" tires on a Jeep. I don't believe it.
Because your Jeep looks like everyone elses stock Jeep.
I just realized I don't have a single photo of my '97 TJ when it was new or still on its 30" tires. I'm shocked.
Were those 3.75 gears a custom item?
Pretty sure all 4.0 automatics had 3.73 gears. You can also run a build sheet to check what it left the factory with.
Go here and enter your VIN. Once you do that, you'll see everything your Jeep had originally. That said, a 31" tire will be fine on your Jeep.
[URL]https://fcacommunity.force.com/RAM/s/equipment-listing[/URL]
FWIW, math is your friend here. A 235/75R15 tire is generally 28.8". A 31x10.50R15 tire is usually 30.5". If you run the gear calculator, assuming a 32RH automatic with 3.73 gears, you get:
28.8" tire = 3046 RPMs @ 70 mph
30.5" tire = 2876 RPMs @ 70 mph
That equals a 170 RPM difference between the two tires @ 70 mph. This is not a significant difference at all. Run a 31" tire and be happy!
Interesting. I've never seen a 3.07 automatic, but guess it could be something as simple as the factory ran out of 3.73 gears and wanted to keep production rolling!I was actually bored yesterday and searched a bunch of autotrader VINs from 97-02 to see what would happen. Majority of 32RH automatics were 3.73, though there were some 3.07s.
Interesting. I've never seen a 3.07 automatic, but guess it could be something as simple as the factory ran out of 3.73 gears and wanted to keep production rolling!
Interesting. I've never seen a 3.07 automatic, but guess it could be something as simple as the factory ran out of 3.73 gears and wanted to keep production rolling!
Pretty sure all 4.0 automatics had 3.73 gears. You can also run a build sheet to check what it left the factory with.
Go here and enter your VIN. Once you do that, you'll see everything your Jeep had originally. That said, a 31" tire will be fine on your Jeep.
[URL][URL]https://fcacommunity.force.com/RAM/s/equipment-listing[/URL][/URL]
FWIW, math is your friend here. A 235/75R15 tire is generally 28.8". A 31x10.50R15 tire is usually 30.5". If you run the gear calculator, assuming a 32RH automatic with 3.73 gears, you get:
28.8" tire = 3046 RPMs @ 70 mph
30.5" tire = 2876 RPMs @ 70 mph
That equals a 170 RPM difference between the two tires @ 70 mph. This is not a significant difference at all. Run a 31" tire and be happy!
Now you have.Interesting. I've never seen a 3.07 automatic
Now you have.
p.s. Can you make my Jeep look as good as yours (for a discount) now.
p.p.s. The 3.07s (and 33s) are why I sold it. Luckily, I found my Rubicon 4 days later.
View attachment 357652