Re: Replace spare tire with Donut/Space saver
Your spacesaver needs to be the same rolling diameter as your regular tires so if you want to go with a thinner tire you need a higher profile than the stock profile (e.g. 80,85....).
If it isn't the same diameter, at least with your drive axle you risk damaging your limited slip diff/locker if you have one. Or, even if it is an open differential, you'll be spinning the crap out of it.
Another thing to think about it load rating of the tire, even driving at a slower speed. You need to ensure it can handle the load of your rig otherwise you risk having another flat tire.
Finally, the slime is a waste of time. I've tried using it a couple of times, different brands and it never really works well, and you can't re-use the tire after using it. Or at least I couldn't.
I carry a:
- tire plug kit
- compressor
- full sized spare (or 2)
Note there are also space saver tires that require inflation, that might help you save some more space. I know Mercedes and Maserati use them. They are like a donut space-saver but you use a small compressor to inflate them.
I would focus on narrowing your tire options to anything the same rolling diameter and then go from there.
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