is safe?
After looking at manufacturer specs for 185/60-15 tires, I see that the Rim Width Range listed is 5-6.5" or 5-7" depending on brand. The Goodyears are the ones that appear to handle a 7" wheel.
Where does this number come from? This number is generated by the tire engineers that want to produce a recommended number in which for 100% of all cases, it is a known safe combination.
What does an 8" wheel do? Well, it moves it into the range of less than 100% certainty of safety. The problem is that the number isn't known. Engineers are fairly conservative folks when it comes to safety, as there are lawyers and liability involved. So... 8" could fall into the 60% safety range or the 95% safety range... Heck, it might even be 98-99%. It can't be said for sure without running the same calculations and simulations that those engineers did.
Personally I wouldn't be totally comfortable with it based on that analysis of the situation... but I'm not going to fault anybody that does. That's my totally unbiased view of it.
but thats all well and good. people take this into the 9 10 11 inch wide range
theres a bump in the rim (on recent rims) that is supposed to keep a tire bead in place. If you run stretched tires there's a chance the tire could debead while driving, and if it loses too much pressure it will also debead, depending on the stretch. old wheels didnt even have the safety bead bump thingy.
now. my take on the whole safety issue would be how many people actually have tires last 50k miles in such a state?
I see nothing wrong or unsafe about the left but would question the right. its not that a stretch is unsafe just overdoing anything makes it questionable.
points you here
http://honda-tech.com/showthread.php?t=2492509
people who are really into the scene take tire replacements and scraping as costs of the culture.
and this is a non bagged daily driver. hence the ones that are hardcore about it. not just bagged