Hey guys, I have a quick question for you guys... I have access to a set of 18 inch BBS "challenge" style wheels. No they are not the 360 cs wheels but they were on a 360 and they are real BBS wheels, but they are 18 inch. I was wondering if these would fit on my 355 or if I needed any spacers etc??? Any info would be great! Thanks again!
It depends on the offset. The width of the rim and its backspacing is the determining factor. The fact that it is an 18 inch rim will not be an issue all you need to do is reduce the tire size and maintain the stock rolling diameter.
Here is a basic explanation of terms and factors, there are better ones out there but this should give you the overall picture. http://en.wikipedia.org/wiki/Wheel_sizing When time comes to buy tires this is a very useful size calculator. http://www.miata.net/garage/tirecalc.html What model BBS are they?
Here is a very good explanation of wheel measurements, it was the original one I was looking for. It walks you through all the aspects. https://www.rsracing.com/tech-wheel.html
Thank you for the replys guys... I guess I was just curious to know if these wheels are a direct bolt on. I do understand wheel offsets etc... but i have no idea what the 355 comes with and what is required, or how differnt it is to a 360. I see guys with 360s rolling on 430 wheels and I was just wondering if 360 wheels would fit a 355. I do know that the 360 and the 430 share lots of architecture though but you guys are correct... those are great website to explain offests, bolt paterns etc...
The wheels are a direct fit and will bolt on but from previous threads I believe there were some offset issues(with the challenge wheels, I am assuming these have a similar offset). Run a search it has been discussed before in detail. One you get them on be sure to post some pictures, I would love to see how it turns out.
360s wheels, be it the standard or Challenge ones will bolt on direct to the 355s...BUT it'll stick out from the wheelarches on the rears. On 348s, due to the offset difference betwixt 355/348, ALL iterations of 360 wheels will bolt direct and fit inside the arches too, albeit quite snug at the rears.... Edit: Short answer.. 360 wheels onto 355s will stick out at the rears.
360 factory wheels will bolt right on to a 348 or 355 with no issues whatsoever, I've done it to my customers cars with ZERO fitment issues, so if all offset and back pad dims are the same as the factory wheels you will have no troubles.
