The Leveling Kit Thread
Joined: Jun 2014
Posts: 31,746
Likes: 12,567
From: Nowhereville, Barton City Michigan
Here's a calculator you can use to determine what those tires will do to your effective gear ratio. If you have a 10 speed, it won't be as drastic as a 6.
Gear Ratio Calculator
Gear Ratio Calculator
Member
Joined: Jul 2020
Posts: 80
Likes: 33
From: Valdosta, GA
Here's a calculator you can use to determine what those tires will do to your effective gear ratio. If you have a 10 speed, it won't be as drastic as a 6.
Gear Ratio Calculator
Gear Ratio Calculator
Junior Member
Joined: May 2020
Posts: 10
Likes: 20
What size tire did you have before?
I went from 275/65r18(32.2x10.8) to a 285/70r17(32.7x11.2) and didn't have any noticable loss in fuel economy. I have the 5.0 with 3.73 gears though and I did correct the speedo.
If you're in NorCal I can see if I can correct your speedo. The software I use has no problem correcting Speedos on 15-18 but it's had some problems with 19'+. Waiting on a software update but this Covid thing seems to have messed that up.
I went from 275/65r18(32.2x10.8) to a 285/70r17(32.7x11.2) and didn't have any noticable loss in fuel economy. I have the 5.0 with 3.73 gears though and I did correct the speedo.
If you're in NorCal I can see if I can correct your speedo. The software I use has no problem correcting Speedos on 15-18 but it's had some problems with 19'+. Waiting on a software update but this Covid thing seems to have messed that up.
Senior Member
Joined: Mar 2012
Posts: 440
Likes: 40
From: Kansas
Hey guys, sorry to be "that guy" but I was hoping someone could tell me if the wheel/tire/level set up i want to run will be ok. I want to do the Bilstein leveling struts, with Venomrex 20" +12mm offset wheels, with bfg k02 285/65/20 tires. I've read where people have run that level/tire size on oem wheels, but I wasn't sure if going to the +12 Venomrex wheels would cause problems. THANKS!
Member
Joined: Jul 2020
Posts: 80
Likes: 33
From: Valdosta, GA
stock wheels. There are several guys running that size (essentially a 285/65R20) with no issues. They are running 2, 2.25, or 2.5” levels.
I would look into Nittos unless you’re set on the BFGs. They have 3 different ATs in 35x11.50r20s. Which are much cheaper than the 285/65r20, and lighter. Just food for thought.
Junior Member
Joined: Jul 2020
Posts: 2
Likes: 0
From: Houston
Venomrex
Hopefully I can help I had 2.25 level kit installed and have ridge grapplers 275/65r20
venomrex 601. Only time I rub is fully cranked steering wheel going backwards up the driveway. If I have only have a a slight turn on steering wheel backing up no rub.
venomrex 601. Only time I rub is fully cranked steering wheel going backwards up the driveway. If I have only have a a slight turn on steering wheel backing up no rub.
Senior Member
Joined: Mar 2012
Posts: 440
Likes: 40
From: Kansas
Thanks! There's about a half inch difference in tire size so I'm not sure how much of a difference it will make when it comes to rub. I suppose if I buy the tires from a place like Discount Tires and I do have issues I can return them and go down in size.
Junior Member
Joined: Aug 2017
Posts: 19
Likes: 4
From: Baton Rouge, LA area
I can’t answer all of your questions but I know I’m looking into 35x11.50r20 tires for my
stock wheels. There are several guys running that size (essentially a 285/65R20) with no issues. They are running 2, 2.25, or 2.5” levels.
I would look into Nittos unless you’re set on the BFGs. They have 3 different ATs in 35x11.50r20s. Which are much cheaper than the 285/65r20, and lighter. Just food for thought.
stock wheels. There are several guys running that size (essentially a 285/65R20) with no issues. They are running 2, 2.25, or 2.5” levels.
I would look into Nittos unless you’re set on the BFGs. They have 3 different ATs in 35x11.50r20s. Which are much cheaper than the 285/65r20, and lighter. Just food for thought.