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If you get a tire diameter that matches up in an equivalent manner with the 15" size, you will have no adjustments to make.
Example: With my 1994 Ranger, the equal 15" size was 205/70/15 to come up from the factory 225/70/14s. But, I was stubborn and went with the smaller 4wd option size (215/75/15) and got the speedometer gear to correct for that. You don't have a speedometer gear to mess with. I think.
If you get a tire diameter that matches up in an equivalent manner with the 15" size, you will have no adjustments to make.
Example: With my 1994 Ranger, the equal 15" size was 205/70/15 to come up from the factory 225/70/14s. But, I was stubborn and went with the smaller 4wd option size (215/75/15) and got the speedometer gear to correct for that. You don't have a speedometer gear to mess with. I think.
Thanks. I will probably go to a tire shop and have them help me pick the correct equal size.
There is no reason this should do any harm to anything.
As alfred says you just have to get the outer diameter correct so your speedometer shows the correct speed. A good tire shop will be able to find some tires for you to accomplish this.
Take a look at Tire Rack's web site, they can sell you 4 (or 5) mounted and balanced wheel/tire assemblies. The simplest version of this is to go "plus 1" on wheel size, going to a (generally) one size smaller aspect ratio on the tire. So you might go from a 225-70-15 tire to a 225-60-16 tire mounted on the new 16" wheel.
I don't know about your specific van, but a lot of newer trucks have a feature where you can program in a specific oversize (or maybe also undersize) tire outside diameter.
tstone makes a good point that you need to check the offset. Tire Rack will offer you wheels with the correct offset, so would a good local tire shop, but you have to look out for some bodger trying to unload "will fit" existing inventory wheels...
It might help if you said what you are trying to accomplish, Bigg Mann. Do you just like the look of a bigger wheel/lower profile tire (nothing wrong with that...) or do you want to go to a bigger wheel/tire assembly diameter for more ground clearance, or something else?
Last edited by M3 Mitch; 07-14-2009 at 07:19 PM..
Reason: ask what he's trying to accomplish...
Take a look at Tire Rack's web site, they can sell you 4 (or 5) mounted and balanced wheel/tire assemblies. The simplest version of this is to go "plus 1" on wheel size, going to a (generally) one size smaller aspect ratio on the tire. So you might go from a 225-70-15 tire to a 225-60-16 tire mounted on the new 16" wheel.
I don't know about your specific van, but a lot of newer trucks have a feature where you can program in a specific oversize (or maybe also undersize) tire outside diameter.
tstone makes a good point that you need to check the offset. Tire Rack will offer you wheels with the correct offset, so would a good local tire shop, but you have to look out for some bodger trying to unload "will fit" existing inventory wheels...
It might help if you said what you are trying to accomplish, Bigg Mann. Do you just like the look of a bigger wheel/lower profile tire (nothing wrong with that...) or do you want to go to a bigger wheel/tire assembly diameter for more ground clearance, or something else?
I was just wanting to give it a little more height or clearance. Plus would like to get some sharp wheels but not real expensive. Then in winter months use original tires and wheels so as not to have salt ect. mess with new chrome wheels.
With the lower steps on the van it is a lot lower and I thought about taking the custom running boards off but extra step helps me getting into van since I am disabled. This van is in such good shape we want to sharpen it up some and put a good paint job on as we plan on keeping it for awhile.
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