wheel size change question?
Le Mans Master
Joined: Dec 2005
Posts: 8,577
Likes: 963
From: Communist Colorado
I wouldnt think so think if the overall tire height is the same. Usually, a larger wheel gets a lower profile tire, so the overall height should be the same or very close to the same as factory.
Le Mans Master
Joined: Aug 2009
Posts: 5,197
Likes: 190
From: ALL governments are legalized mobsters, so doesn't matter where I live :(
There are several online tire calculators you can use to determine what size of tire is best to use for your rims. You basically want to keep the front and back as close as stock to possible regardless of what size rim your using. In most cases you'll probably be off by a very small margin. You'll see that when you use the tire calculator to compare stock sizes wheel/tire with an aftermarket for example, travelling at 60mph you'll actually be going 61.5mph or a tadd slower depending on what size tire you have chosen...in the end, no big deal.
Drifting
Joined: Sep 2008
Posts: 1,260
Likes: 1
From: Pearl Mississippi
Here is a link for a tire size calculator maybe this will help answer your question.
http://www.miata.net/garage/tirecalc.html
http://www.miata.net/garage/tirecalc.html
Tech Contributor
Joined: Jan 2004
Posts: 20,030
Likes: 289
From: Wylie TX --> Less is More, except under the hood !
Read my post on the subject below and you will be fine ... 
http://forums.corvetteforum.com/c5-g...ah-issues.html
Toque
http://forums.corvetteforum.com/c5-g...ah-issues.html
Toque
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Read my post on the subject below and you will be fine ...
http://forums.corvetteforum.com/c5-g...ah-issues.html
Toque
http://forums.corvetteforum.com/c5-g...ah-issues.html
Toque
that thing just confuses me
all i know is i am going to be switching from stock sizes to 285/35/19 rear and 255/40/18 fronts 
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Instructor
Joined: Sep 2009
Posts: 166
Likes: 0
From: Quantico Virginia
You'll be fine. Moving from stock to those sizes, your speedo will read 60 mph when you're going 60.4 so only off by a hair. And you'll still be within the stagger ratio so you're active handling won't be affected either....
No problem if your new wheels have the same offsets as OEM wheels.
Le Mans Master
Joined: May 2007
Posts: 5,383
Likes: 6
From: hagerstown md
St. Jude Donor '08-'09
