Spare and jack
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Senior User
Joined: Dec 2012
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Spare and jack
I have an 02 4x4 v10 Ex that has modded V and modded B codes. I just upgraded from 265/75/16 to 285/75/16 Michelin A/T2's.
My current spare is 265/75/16, will that be fine or do I need to get a 285 sized tire? (Im asking because on my acura, the donut spare is way smaller)
Will the stock jack or a 6ton harbor frieght jack do fine? or do I need a highlift jack?
My current spare is 265/75/16, will that be fine or do I need to get a 285 sized tire? (Im asking because on my acura, the donut spare is way smaller)
Will the stock jack or a 6ton harbor frieght jack do fine? or do I need a highlift jack?
Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
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From: Western AR
If you ever have to drive very far with that spare on, it can cause damage to your differential in the rear. There is a 1" size difference between a 265/75 and 285/75, which is pretty significant for a differential to absorb. I think your stock jack should be fine....or a big bottle jack.
Elder User
Joined: Feb 2004
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On the rear axle of a front wheel drive or front axle of a rear wheel drive the tire size is more or less insignificant. That's not technically true, but it works for the donut tires. Start adding heavier drivelines with limited slip and stuff like that and it makes it harder for the driveline to compensate for the different axle speeds.
Veteran/Sheepdog
Joined: Feb 2012
Posts: 6,047
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From: Western AR
Those little tires you are talking about clearly state they are for emergency use only. They have very low speed limitations on them, and most owners manuals tell you to only drive to the tire shop with it on there. Most people ignore or don't even bother to read those warnings, though. I have answered calls to people stranded on the side of the road too many times over the last two decades who have those little donut tires on their cars and they failed. Almost all of those people had been driving around for DAYS on the donut and at highway speeds to boot. If you put one of them on the front of a front wheel drive car and drive it for days, you are doing damage to your transmission and possibly the CV joints as they try to match each other, but can't. You have two tires that are traveling different distances with each revolution which = not good.
Super Moderator
Joined: May 2004
Posts: 29,380
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From: Central Coast of CA
That's why you never saw a donut as a spare on a truck or SUV.
A lot of cars don't even come with spare tires anymore, donut or otherwise, to save money.
Stewart
Last edited by Stewart_H; Aug 13, 2013 at 05:21 PM.
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