LT265 vs LT275
What would the pros and cons be to changing my tire size on my 2013 GMC 2500HD diesel from an LT265/70R18 to an LT275/70R18? I'm looking at doing this due to cost only. I can get a very good price on ...
Forum Discussion
bucky wrote:
This change would have minimal effect, but remember to have the truck reflashed if you have a bigger change in size.
A bigger change will have an impact on shifting and fueling. Most tuners can correct tire size even on a stock tune.
Be aware that at least for GM and Ram the dealer can only reflash to a factory size offered on your truck, forcing you to a tuner.
No, he does NOT need a reflash after increasing the diameter of his tires by a half inch.
A two, three or four inch jump, it may be a good idea.
