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Old 07-02-2015, 01:10 PM
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Minimum jack height for a 35" tire install?

Prepping my tools for my first install; 2 weeks away, so stoked.

I don't have a floor jack. And I can't find anywhere to rent one, so I'm going to go ahead and get one from Home Depot it sounds like.

What's the minimum lift height I should target? I'll have a 2.5" Teraflex suspension lift and 315-70R17 tires going on.

I found a few options:

- $38 2.5 Ton low profile jack; 14.375" max lift height; 4.875" collapsed height

- $99 3 Ton garage jack; 18.5" max lift height; 6.625" collapsed height

- $27.00 6-Ton Bottle Jack; 16.25" max lift height (starting at 8.5"). This can be rented, but I've never tried a bottle jack on a vehicle, and i need to be able to lower the axels with the jack, so this might not be ideal with the base height.


Can I get away with the $38 low profile jack? Seems like a total lift height of (collapsed + lift) would be 19.25, unless the max lift height includes the collapsed height, which it very well may.

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Old 07-02-2015, 01:49 PM   #2
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The raised heigh will be from the ground so it will include the lowered height number. I'm not sure if the specs but I bough a 3 ton truck jack from Sears. It raises my 2.5 on 35s with a few inches to spare for removing tires ect.

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Old 07-02-2015, 02:18 PM   #3
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I have a generic 2-1/2 ton floor jack that I bought at either Harbor Freight or an auto parts store. I can't remember. I have the same size lift and tire that you have. It's adequate for rotating tires and what not but only just. If I remember right, I have to put the jack under the lower control arm on the passenger side. I can get away with that because I welded on a reinforcing plate. Otherwise I think I'd have to put a block or two of wood between the jack and the axle tube. Which is perfectly fine.

At some point I'm going to gather up some material and weld together an extension to get the head of the jack up several inches to give me a head start. Either that or I'm going to buy a new jack that can lift higher.

One important thing to have when you're installing a lift is tall jack stands that can reach the frame. Most parts stores have the cheap 1-1/2 ton units that don't reach very high. But they also sell the 3 ton stands that are much taller. I used those when I was putting my lift on. I also have a set of 12 ton stands from Harbor Freight for working on my truck. They're stupid tall but you need that working on a lifted J-Truck.
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Old 07-02-2015, 06:04 PM   #4
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X2 on the jack stands. I have two sets. The big ones support the Jeep and a smaller set is used to support the axle if needed. I would go with the 3 ton floor jack you listed.

You'll be able to get the wheels off and then some jacking under the axle. I like to get it as high as I can on the jack stands though. This allows the axle to droop more making it easier to pull springs out and that sort of thing. Also the floor jack with wheels let's you wiggle the axle around a little which can help line up bolt holes.
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Old 07-02-2015, 06:12 PM   #5
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Get the taller and heavier duty jack. Will make life easier and safer. Bottle jack will be a pain in the ass cranking it up and down. Get at least 3 ton jack stands, that is a lot of weight above your head. And smaller set for the axle is a good idea also.
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Old 07-02-2015, 09:29 PM
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Thanks guys. Got some small stands, will grab some 3 tons too
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Old 07-02-2015, 10:17 PM   #7
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If you're installing the lift your self get a couple 6 tons as well.
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Old 07-02-2015, 10:38 PM   #8
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I misspoke earlier.

My small stands are 3 ton.
My medium stands are 6 ton.
The big ones are 12 ton.

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