I am probably gonna go with 20s then I was already planning on doing some weight reduction modifications. Thanks for your input

 

I like 20's and I am losing some performance, not sure how much yet, They ride smooth for me. I also bought my wheels from discounted wheel warehouse, the reason they accept payment by your discount tire car, I got a great deal on my wheels and they come ready to put on the car, tires and wheels balanced and packaged safely for ups delivery. I would buy from them again, also the best thing about buying from them is no tax online, saves a hundred bucks at least. You can call them to ask what will fit on your car and the sizing information to get the perfect set. Their service over the phone is excellent and they had the lowest prices on my wheels.

20x7.5 gianelle wheel with black caps and locking lug nutsvand falken z rated tiresand balanced together was $1600 including delivery.

The falken tires they give you are 40,000 miles at least and they perform excellent. also if you have a discount tire in your area you can have them mount the wheels on for a cheap price and they can add an extended warranty on the tires before you use a thousand miles on them, just show them your receipt and ask them about the warranty price to cover anything that happens could happen to tires. its not expensive for the warranty at all.

Have fun finding a nice set, hope this info helps.

 

20's fit so perfectly, IMO

 

I have heard mixed answers about this, but does bigger tire size mean that your speedometer will be thrown off?

 

Depends on just how much bigger, but yes it will throw it off. You can get your computer reprogramed so that it reads the correct speed, or you can just remember how off the speedo is.

 

Not always, but it can depending on how much bigger you go. Here, use this calculator to find out how much your speedo will be affected.

http://www.miata.net/garage/tirecalc.html

 

IMHO, it depends on how much driving you do, AND the condition OF the roads you drive. Chuck holes will destroy the larger wheels, such as 20s, and bad enough on 18s. If you drive a lot, like I do (35,000mi/year), go with the 18s. A couple of 1,000 miles a year, go with the 20s.
Buy the 20s!

 

i went with 20's plus i have mine lowered with eibach springs. no reall rubbing issue inless i hit a good sized bump them my back tires bottom out in the wheel well but dont hit the lip. the ride wuality is a lil rough but handles much better imo plus i am running a wider tire than normal too. i have a 255-35 and my speedo reads pretty well from what i can tell.

 

Thanks for your info