Well the tire mounted both places is ugly, and not functional, nothing but taking up space. But I think its the lesser of two evils on the outside, because interior space is more important, for gear, or more importantly seats if your putting seats back there.
Man it would be great if you could mount the tire under the car yet not lose ground clearance, find a place to tuck it up under there in an unused space, yet sadly this aint gonna happen.
Personally I'm taking my spare tire off the back soon and just storing it at home. 90% of my driving is local and if the tire had a problem I'd be local or I could put the tire carrier on if I took a road trip. Also not to mention I have aftermarket rims and tires and the stock rim and tire on the back doesnt exactly match. Taking it off will save a bit of gas and not look stupid. The only reason I see leaving it on besides that once in a blue moon time you might get a flat (the stock tires from experience are damn durable and had not very many problems on many limos that run many miles always on OEM tires) is if somebody were to rear end you it would be one more thing for the rear tire to go into their teeth
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My cars:
Lamborghini Murcielago
Supercharged Viper 800 HP Special Edition #49 of 50
Porsche Boxster S
My Hummers:
08 H2, 22 in rims, 6 HID lights, 20 in TV with DVD
4 H2 limos 3 have lighted dance floors + ceilings, 1 has Zebra interior 24-26 passengers
H2 Limo 26 pass lighted dance floor (sold)
H2 Limo 24 pass (sold)
03 H2 (sold)
H1 Open top (sold)
FirstClassLimos.net - H2 limos and party buses in OH & PA
my car collection