19X7.5 rims?

[pcmmelite]

I was wondering if you guys know if 19X7.5 rims will cause me any issues with rubbing? I see a nice set of rims for pretty good price at this spec. What tire size range would our car need to fall into with said spec to stay close to stock for correct speedo/mileage readings?

[Shrep]

I can't tell you whether you'll rub or not, or even if that particular wheel will fit, because I would need the offset, and whether you are lowered...however tire comes in to play there too...

You have several options for tires, depending on how much room you'll have for width, but I wouldn't suggest going past 225 on a 7.5" rim. Keep in mind that all tires are actually different in measurement, regardless that they are marked the same "size".

For example the following are specs on different tires all marked as 225/35-19:

Brand______Sect. width______Tread width_____Overall Diameter
Continental____9.1"__________not listed__________25.1"
Dunlop________9.1"____________8.1"____________25.2"
GoodYear_____9.1"_____________7.7"____________25.2"
Pirelli_________9.3"__________not listed__________25.5"
Fuzion________9.1"_____________7.8"____________25.2"
Yokohama_____9.2"_____________7.8"____________25.3"

Of all of the measurements taken of tires, those three are going to be the most revealing and helpful when trying to determine a tire that will not rub. At 225/35-19, you're very close to the same external dimentions as a stock wheel/tire setup. All things being equal, you'd only have a 1.4% difference from your speedo (60.8mph actual speed when speedo indicates 60mph)

Best way I've found to go to determine a tire that will not rub, is to take something you already know fits, get the measurements from online like I listed above, then go to your car and find out how much clearance you have to the fender, strut and inside wheel well, with the wheels straight, and turned both directions. There are many areas to pay attention to, so make sure you get them all. Then go looking for brands that have a tire in the same size (physically, such as the relationship between 225/50-16 and 225/35-19) Then get the specs on those tires, and see how they compare to the specs on the tire you know fits. Make your adjustments accordingly, and you should be good.

Some helpful links:

www.tirerack.com (http://www.tirerack.com/)
www.miata.net/garage/tirecalc.html (http://www.miata.net/garage/tirecalc.html)

[pcmmelite]

the offset is 45mm. It lists a probe as a applicable car unless they're only accounting for lug pattern but I'm pretty sure it's not. I know that our car is 40mm offset stock but hopefully 5mm is manageable. The car is not lowered but a future adjustable strut/spring combo might be put on if ride height/wheel gap looks funny with 19 inch rims.

[Shrep]

Sounds like you're in business with the wheels then.

[wannabfast]

pshhh.. if it dont fit.. make it fit...