[Nostuh82]

I just bought a set of new rims for my charger and I have a few questions hopefully you guys can answer for me. I probably should have asked these before buying them but too late now. Ok I have a 2010 charger sxt rally edition. Factory tires are 225/60/18, I bought a set of American Muscle 18" rims that are 10" in the back as 9" in the front with a decent offset, don't know the exact. They have Sumitomo 285/35/18 on the rear and 275/35/18 on the front, with a max load at 1521 and 1604 on the tires. I know these will throw my speedo off, I've planned for that I want to know if the tires can handle the weight of the car and if I'm going to have any rubbing or brake problems? I did put the front rim on the car and it seemed to roll and turn fine but had very little space between the inner rim and the caliper. Please let me know what you know. Also what would be the smallest width tire I could put on these re if I have to buy new tires?

Thanks

 

[Ddaddy]

The load rating is fine and if they fit and aren't rubbing, all should be fine.

You won't have any braking issues as long as the wheels fit properly.

They are quite a bit smaller in diameter than the originals were so you must have a large fender gap. Have any pics you can post?

 

[Shots]

Wow those tires are pretty small compared to stock.

If you clear the calipers now, you're not going to have problems with them in the future, because nothing changes to affect that gap without changing the rim or calipers.

The offset could potentially cause an issue, but that will affect if the rim or tire makes contact with the suspension or fender.

As for the width of the tire you can fit on the rim. That depends a lot on aspect ratio (the second number on the tire). A smaller sidewall is, the closer the rim width needs to be to the tire's width. In any case, the width of the tire can't be narrower than the rim width, or it won't seal. The 10" wide rim is 255 wide, so the narrowest you'll ever be able to fit on that rim is a 255/xx/18.

 

[Nostuh82]

Thanks for the help guys. I'm gonna put them on this week after my new tpms sensors come in. I'm gonna give them a shot, I'll post some pics after I get them in there. They are really sweet tires so I really am hoping they will work out.

 

[Nostuh82]

Here are what they look like pre installation.

 

[Nostuh82]

In regards to tire width for the rim, do you guys think the stock 225/60/ would stretch onto the 10" rim, there is quite a bit of sidewall to stretch out but I know that a 225 is only 8.8 inches but i don't know how it works when you stretch if it would make it.

 

[michiganpat]

no, most 225/60R18's are only rated for a 6-8" rim width. tire manufacturers usually give a range of rim widths their tire sizes will fit. many shops won't put a tire on a rim outside the manufacturer's recommendations....

you've kinda screwed yourself with the 10" rims....they're really too wide for 255/55R18's, which is the size I'd recommend (most are rated for 7.5-9" rims). you could go to a 275/45....they'll be slightly short (27.7" tall), but bigger issue is that size is limited in availability and very expensive. cheapest one on tire rack is $204 ea.

the 275/35R18's are less than 26" tall and will look very out of place on the car.....

 

[Shots]

In regards to tire width for the rim, do you guys think the stock 225/60/ would stretch onto the 10" rim, there is quite a bit of sidewall to stretch out but I know that a 225 is only 8.8 inches but i don't know how it works when you stretch if it would make it.

No, a 225 will not fit. Tires won't "stretch out" to fit a wider rim. They really aren't that flexible. At best, you can go as narrow as the rim width but not narrower. A narrower tire than the rim, would be pulling away from the bead and if you have any loss of pressure the seal would be lost and the tire would immediately deflate (probably abruptly). This would be a very dangerous situation, and potentially catastrophic.

Here's a crappy illustration to give a little more perspective of what you'd be asking the tire to do. Gray is the rim, white is air, and black is the tire. If you're cornering, and putting stress on that side wall, you'd be adding even more force than it already has pulling it away from the rim. It just won't work.
Hate to be the bearer of bad news, but 255 is the absolute minimum width you can safely fit on a 10" wide rim. The front rim that is 9" wide you might be able to get away with a 225 depending on the tire, but that's the smallest you could go on it.

 

[Shots]

Also per Goodyear the approved rim width of the stock tire is 6" - 8". So the stock tire will NOT fit a 9" wide tire.