The thing is that you should run a 245.40.18 on the new altimas to retain stock gearing. a 245/40/18 I would not recommend on a 7" wide wheel. The altima needs a 8" or 8.5" wheel for truly proper fitment. Plus you want to be able to avoid rims that are too cheap because manufacturing standards have been compromised. Taiwan has several levels of quality. I wouldn't do the 7's bro. I know there's a shitload of 18,8's out there. Just be patient.
You should get rims off a GS or something bigger that uses 8" rims if you need used ones or cheaper ones. Off a RX7 or 300ZX, just no wider than 8 or 8.5. there's ways to find cheap nice rims that will be the right fit.
hey but wouldnt a 235/40/18 tire be the best fit? thats what all the measurements in the car mags are, and stillen also used that tire size on their cars.... plus isnt the stock rim 215/55/16 or something.... and i think its only 6.5 wide (for the S's) and 17X7 for the 3.5s? so how will putting on a 7 or 7.5 wide rim on be worse then a 8?? someone please explain??
larger profile series tires are more "forgiving" of rim width. When you begin to run lower profile tires (ie. 245/40) then rim width becomes more critical. A 245/40 or 245/45 will physically fit on a 7.5 inch wide rim, but its not recommended. Mounting 245/40's on a 7.5 inch wheel will result is a slightly "bowed" contact patch, or that tire tread will not be nice and flat, thus resulting in less than optimum traction and tread life.
Exactly. Nice to see ya Bryan. It's Rishie. The mountable wheel width is dependant on the tire width and profile. The taller the profile the thinner of a wheel you can run.
With regards to what is in Magazines and what stillen uses, the primary reason they have to run those sizes is cause of the difficult finding a wheel with the ideal offset. I have compromised and am continuing to comprise a database of these wheels for ideal fitment on the altima.
This will retain your stock gearing. If you go into a tire calculator you can see what I mean. Now to find out manufacturer's recommended wheel width for a particular size tire, you should be able to go to their website and look under specs. Or you could go to tire rack and select the tire. Then click the specs button to the right side.
I found some tire models that will not have a problem recommending a 245/45/18 on a 7.5" wheel, but none showed a 7" wide wheel. Beware of the offset you use as well. With a 7.5" wide wheel a low to mid +40 offset should work fine without rubbing in a 245/45/18.