STICKY POST: REAR END WIDTH/BACKSPACING GUIDE
This is to answer the endless question we keep getting despite it being discussed hundreds of times. All rear end widths are WMS to WMS where the face of the wheel mounts NOT axle flange to axle flange
AXLE WIDTHS.... S10....28 spline in 7.5, 30 spline on 8.5s
-82-04 s10 2wd- 54.5"
-82-04 s10 4wd- 58.5"
-96-04 ZR-2 rear end width 62.5" Explorer 8.8....31 spline
-95-01 Explorer UNCUT disc brake rear end 59.5"
-95-01 Explorer CUT (w/ 2 pass side axles) rear end 56.5"
-02-04 Explorer UNCUT Sport-Trac 59.5 (same as above)
WHEEL SPEC/BACKSPACE to keep them in wheel wells....
Wheel diameter doesnt matter for fitment, 15" is used ONLY as an example. Cut (in this case) means you cut the 8.8 to use 2 short passenger side axles. Also....Every inch (or half inch) you add or take away in the wheel width means you need to do the same to the backspace to fit the same. So 1" wider wheel means 1" more backspace, and 1" less wide rim means 1" less wide BS ----stock s10 2wd rear end -15x10" 5.5 bs -15x8" 3.5 bs
--- s10 with UN-CUT 8.8
-15x10" 7 TO 7.5 bs (same as many mustangs/camaros use) -15x9" 6.5 bs
-15x8" 5.5 bs
---s10 with CUT 8.8
-15x10" 6.5" bs -15x9" 5.5 bs
-15x8" 4.5 to 5" bs TIRE WIDTHS.... -28x10.5 or 275 street tires fit s10s fine, and 2nd gens with perfect wheel backpace can fit 285s tucked all the way up into the fender -anything 27 up to 30 inches tall looks good and fits nice on a 2nd gen, 1st gen more like 27 to 29.5
AXLE PERCH SPACING....
-82-04 s10/Blazers have 38" perch spacing
-95-01 Explorer 38.5" perch spacing
-8.8s DO NOT need the perches cut/relocated to bolt directly into an s10!! Just pull the leafs a tiny bit outward when installing the 8.8.
SPLINE COUNT/BRAKES....
-All 95-04 explorer solid axle rear ends are 31 splines and disc brake
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