Originally Posted by carybosse
I can't answer for what people do in your situation, but two 5 ton jack stands are rated for 10,000 pounds. I would probably want to have a minimum rating on a jack stand I would use in your case of 7.5 tons, probably rather see 10 tons. (I have no clue if that is even a rating that can be purchased.)
Some jack stands are rated in pairs, and others individually. It's literally worth your life to be certain you have properly rated jackstands. READ THE LABELS. Many people assume all of them are rated one way or the other, which is not the case. Do NOT take my word or anyone else's for it. Look it up yourself and be sure.
I have a pair of 10 ton (each) jackstands, which are plenty for my rear axle weight. I have an air-over-hydraulic jack for lifting but it stays home. Away from home we'll use a tire service. Also, we have no spare in the Bus.
On the Winnie, which weighed about half what the Bus weighs and did have a spare, I'd use a bottle jack, jack stand, and portable electric impact wrench to change a tire if the need arose. I had to to it once on the road, fortunately the curb side rear outer. But I won't even attempt doing it outside my driveway for the Bus. "Hello, Coachnet...?"