Out of curiousity, what question are you really trying to answer?
Any IFS or IRS on an AD will have involved significant frame/suspension/geometry changes, so what tire/wheel combo works on one will not necessarily work on another.
frt is total cost involved x-member reg shocks the rear is 4 link coil overs OEM frame boxed, 86 s10 blazer 4x4 rear disc brake. Hoping to find someone who has used those style wheels on their 3100 trk. Gen III ls 5.3 eng 4l60e trans
Trying to get height top of tire to road surface....thought someone may have set one up so I could get a general idea. Apparently when resetting OEM computer it's a number that is asked for. Trying to get a harness done and was asked for ratio and height of tires. Not that far along, have ratio but no firm decision on wheels/tires yet. I figured at least 17 inch wheels but no idea on tire size. Seems BowTie overdrive use to give you a number of that height if you knew wheel/tire size.
So you want the diameter of the tire? Just look at the specifications of the tire you plan to buy. It's usually listed along with tread width, section width, etc.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
You are trying to put the cart before horse. It will cause an [censored] over apple cart scenario. Enough about beasts of burden. Best plan would be to finish up setting your computer after selecting and trial mounting your wheels/tired to make sure that they fit your truck. Anyone else's build may not be the same as yours so their tire height wouldn't necessarily fit your truck.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
Tire specs usually include rolling diameter as well as tread width and section width that Otto mentioned. Check out sites like Tire Rack. Here's an example. You can pick a tire or size and then click on "View specs for all sizes" to see all sizes for that particular tire line.
Last edited by klhansen; 03/26/20255:43 AM. Reason: added screenshot
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Tire specs usually include rolling diameter as well as tread width and section width that Otto mentioned. Check out sites like Tire Rack. Here's an example. You can pick a tire or size and then click on "View specs for all sizes" to see all sizes for that particular tire line.
I have 18" wheels on my '49 and mini-tubs in the back to allow a bigger tire in the rear. Mine are American Racing 'Boss' wheels. I had a shop in Phoenix machine the mounting face to get the offset exactly where I wanted it. Here's a link to a photo
Thks guys, just trying to cover bases early on. The tire height threw me off guard because of the need for recalibrating the computer box. Alot of good info listed here and I might have to take a little more time and not get ahead of myself. What is it...patience is a virtue...lol Thks again!
Tire height and gear ratio are inputs to the PCM and used to control the electronic transmission (4L60 or 4L80, etc) The ratios and heights requested by the tuner only have to be close for it to work just fine
If you're using a 350, 700 or a manual transmission it isn't needed, at least in theory. My truck is a 5.3L with a manual transmission which has no speed signal (VSS) from the transmission, and it will sometimes drop the idle very low when I put it in neutral and coast to stop (the VSS trims the IAC). I'm told Dakota Digital has a speed signal generator that solves this problem, but I've not experienced enough issues to investigate it.
