The charts below can tell you how much lift you will need to fit a certain size tire.
The key to the charts is as follows:
A = Stock Vehicle
B = A little Fender Trimming
C = Lots Of Fender Trimming
D(?) = Suspension Lift And Number Of Inches
E = 3" Body Lift
I am only passing this info on to you. It was originally compiled by Four Wheeler. So, if you find any of this stuff to be wrong, don't blame me.
| 30x9.5 | 31x10.5 | 32x11.5 | 33x12.5 | 34 | 35x12.5 | 36x14.5 | 38.5x15 | 39 | 40x17 | 42 | 44x18 | |
| S/T TRUCK | A | EorD(3) | B,D | C,D(2) | ||||||||
| '73-87 P/U | A | B | D(2.5) | D(2.5),B | D(4),B | B,D(6) | B,D(6) | D(8) | D(8),B | D(12) | D(10),E | |
| '73-91K5/Sub | A | B | D(2.5) | D(2.5),B | D(4),B | D(6),B | D(6),B | D(8) | D(8),B | D(12) | D(10),E | |
| '92- K5/Sub | A | B | D(4) | D(4),B | D(6),B | D(6),C | D(6),E | |||||
| '88-on P/U | A | B | D(4) | D(4),B | D(6),B | D(6),C | D(6),E |
| 30x9.5 | 31x10.5 | 32x11.5 | 33x12.5 | 34 | 35x12.5 | 36x14.5 | 38.5x15 | 39 | 40x17 | |
| '86-on D50 | A | B,E | ||||||||
| -'93 Dakota | A | E | D(3),C | |||||||
| '93- Dakota | A | B | D(3) | |||||||
| -'93 150/Ram | A | B/D | D(3.5) | D(2),B | D(4),B | D(5),B | D(4),B,E | D(6),B | ||
| -'93 250/350 | A | B/D | D(3.5) | D(2),B | D(4),B | D(5),B | D(4),B,E | D(6) | D(5),B,E | |
| '94- Ram P/U | A | D(3) | D(3) | D(4),B | ||||||
| '98 Durango | A | D(3) | D(3) |
| 30x9.5 | 31x10.5 | 32x11.5 | 33x12.5 | 34 | 35x12.5 | 36x14.5 | 38.5x15 | 39 | 40x17 | 42 | 44x18 | |