Hey everyone, I just bought my 2006 V6 a couple weeks ago and just bought a set of chrome 18 inch bullitt's. I thought the overall diameter would be the same as the stock setup, but it turns out that with the tires that came on the new wheels the total diameter is about an inch to 1.5 inches smaller. I think this has affected my speedometer, but I'm not sure if it's just in my head. It seems like my speedo is about 10-15 mph faster than I feel like I am actually traveling, and I'm wondering if I should have the dealer recalibrate my speedometer. I plan on eventually buying a CAI + tuner, and I'm wondering if I can recalibrate the speedometer and odometer with the tuner for the smaller diameter size?

Thanks in advance.

 

at most ur running 3 mph over / under, whats ur tire size??

Paul

 

245/40 zr 18


it might just be i'm not used to the new car yet...

 

I have the same exact wheel size, LOL! and rims. They look awesome! and Im not really sure on the speedo thing I think its ok it cant be that off.

 

when ur travelling 60 ur actualy doing 56.9 so my estimate was pretty close!

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

So ur ACTUALY going slower than u think!

Paul

 

must just be in my head, prolly cuz I can't hear the exhaust...that'll change pretty soon


thanks again!

 

Ok, tell me if u want gt Mufflers i can get u a good price

 

yeah i'm still kinda stuck between flowmasters or gt takeoffs. both sound pretty good, i'm just researching price and availability right now

 

k, gt take off mufflers (both) are gonna be 89 shipped

Paul

 

Are you getting a single or dual?