How far would you drive with a stock spare with 315/75r16's?
That's what a differential is for, right?!
That's what a differential is for, right?!
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
This is directed at me? My thought is I want the spare under the truck. 315 doesn't fit (maybe a nearly bald one?) 285/75/17 is 34" versus 34.5" so it's pretty darn close. Enough that I would feel comfortable reaching highway speed rather than holding up traffic on my way to the tire shop. I also carry a patch/repair kit FWIW.So begs the question why? I was in that position sometime ago running 35's without a spare. Simply run down to any tire store and buy a pull-off or used one in the 315 size. Think I paid maybe $20 for one. Was it pretty or matched or great? no. But was closer than a whole size mistmatch.
From personal experience, you can make it about 15 miles at 100 MPH before the diff gets hot enough to shear off the pinion and start the rear axle on fire.
No, lol, it wasn't. Just saying picking a close to full size spare can be pretty affordable. And of course depends are where you are going to haul it or store it.This is directed at me? My thought is I want the spare under the truck. 315 doesn't fit (maybe a nearly bald one?) 285/75/17 is 34" versus 34.5" so it's pretty darn close. Enough that I would feel comfortable reaching highway speed rather than holding up traffic on my way to the tire shop. I also carry a patch/repair kit FWIW.
They also sell an interco 34x10.5x16, but reports from the local tire guy is that it's actually more like 33" once mounted. 35x10.5x16 is mega expensive and also might not fit under the truck.
No sh*t?
How far would you drive with a stock spare with 315/75r16's?
That's what a differential is for, right?!
Unfortunately, yes. 1972 Chrysler Town & Country Wagon with Chrysler Corp 9" HD rear axle. Standard tire on the left. Had a flat on the right before I left for school. I was already late when I had to install the spare. I was 17. I "knew" about it, but didn't think it would happen to me.
The spare was about 3" diameter LARGER than the rest of the tires. I gave it hell and we were running 100-120 on the way to school. Stopped at a stop sign, accelerated hard off the line and the driveshaft popped off. I figured I sheared the U-Joint, but when I looked under the car, the DS was banging around on the ground with the yoke still attached and there were flames coming out of the differential. It had actually sheared off the pinion and started the gear oil on fire.
We were even later for school.
That was a tough one to explain to Dad.
Depending on rig year and speed, the first thing to happen will be the VC locking up.
...
What does VC stand for?
The real question is why are you driving around with a spare that is not the same size as your regular tires? That constitutes poor planning in my opinion. There is no comparison on the potential cost of buying a used tire vs. the cost of replacing a diff.
Do the whole "lock center diff, pull fuse, remove front driveshaft" deal and put the mis-match tire up front.
Another reason being part time 4x4 is convenient
The real question is why are you driving around with a spare that is not the same size as your regular tires? That constitutes poor planning in my opinion. There is no comparison on the potential cost of buying a used tire vs. the cost of replacing a diff.
there is a thing i picked in the army in case of emergency
deflate the large one and over inflate the small one