Silverado wheel question

[John]

... If they do fit ....make sure the overall height of the tire is the same as the originals.
... I had a friend that has a 2004 Silverado and he went from the stock size aluminum rim and tire
... to a 20" rim and tire and we noticed on a trip that the truck ran at a lower rpm on the highway
... and would downshift on small inclines and cause the transmission to shift more often.
... and later he ended up having the transmission rebuilt.
... I try to stay with the factory height of my tires .... if I change wheels.
[img]<<GRAEMLIN_URL>>/beers.gif[/img]

[RPOLS3]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: John</div><div class="ubbcode-body">
... If they do fit ....make sure the overall height of the tire is the same as the originals.
... I had a friend that has a 2004 Silverado and he went from the stock size aluminum rim and tire
... to a 20&quot; rim and tire and we noticed on a trip that the truck ran at a lower rpm on the highway
... and would downshift on small inclines and cause the transmission to shift more often.
... and later he ended up having the transmission rebuilt.
... I try to stay with the factory height of my tires .... if I change wheels.
[img]<<GRAEMLIN_URL>>/beers.gif[/img]
</div></div>

I think a reprogramming of the computer will fix this - and the speedo will read correctly too. Pretty common from what I understand.

[Jeff H]

The lug pattern is the same on the 1500 4WD trucks. The newer trucks have larger calipers which require the 17, 18 or 20&quot; wheels and the older ones can run the 16&quot; wheels. If you go with taller tires, you can get a Diablosport tuner to change the tire size and make the speedo correct and the transmission will be fine. I have 35&quot; tires on my 2009. I went with 17 x 8 wheels with the stock backspacing to keep them from sticking out.