BACKN68
11/29/2007 12:37:49 AM
Looking to make a purchase this Friday on a '08 Alpha H3. At my request, the dealer is "swapping out" the stock 32" tires/rims, for a set of stock 33" tires/rims off of an ADVENTURE PKG equipped '08. My question is: won't this affect the speedo calibration and the accuracy of the odometer ? My salesman (sales manager) says "NO". Would like some input before I purchase.
Thank you for your time.
Kent
hilljob26
11/29/2007 3:15:19 AM
if it does,i doubt it will be enough to get you in trouble
Doc Olds
11/29/2007 5:40:15 AM
Not much. Do the mathmatical calculation and you will find that when your speedo shows 70mph, your actual speed will be appx 72. Not a significant problem IMO?
The math:
Actual Speed = new tire diameter x indicated speed
Old tire diameter
72.1875mph = 33" x 70mph
32"
Muddydawg75
11/29/2007 1:50:08 PM
or you can do the PCM mod, right?
Doc Olds
11/29/2007 2:15:35 PM
I do not think anybody is doing the PCM for tha Alpha H3, yet? Patches had a thread about that, but the PCM could be changed to reflect your tire diameter change. So technically MuddyD, the answer is Yes.....
When available or if you HP tune yourself.
Muddydawg75
11/29/2007 2:22:17 PM
I just mentioned it to get the interest up for Kelly and the gang... wink wink, nudge nudge...
HummBob
11/29/2007 7:46:55 PM
quote:
ORIGINAL: Muddydawg75
I just mentioned it to get the interest up for Kelly and the gang... wink wink, nudge nudge...
Marketing........NICE!!!!!
