vavaroutsos
Well-Known Member
- First Name
- Pete
- Joined
- Nov 24, 2017
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- Location
- Scotts Valley, CA
- Vehicle(s)
- 2015 Sprinter Crew Van 2500 High Roof 144" WB OM651 Brilliant Silver, 2019 JLR 3.6L 6SPD Granite Crystal
Go 5.13. With the stock 4.10 gearing and 33" tires I find I don't use 6th gear on the manual transmission unless I'm on a downgrade. If you want 6th gear to feel close to the stock 5th gear, then 5.13 gearing with 37" tires will be close. This will give you a really short 1st gear for crawling.How does this change for a manual rubicon.
I’m running 35s on the stock 4.10 right now. I’m upgrading to 37s soon and plan to regear next week to 4.88.
Thoughts?
It seems the automatic transmission handles non-ideal gearing much better than the manual. With 8 gears the ratios are tighter, and the torque converter helps at low RPM. On the manual transmission both 5th and 6th are overdrive gears. I think it would have been better with only 6th being an overdrive gear and having a slightly tighter ratio between the gears, but there's not much you can do about that.
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