Quote:
Originally Posted by s346k
depending on tire size the drag radials may be hurting more than helping
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Considering that this car, being an LT1 model, came with 245 all-season tires, I find this theory highly unlikely. Agree though that his chosen size might not necessarily be optimal due to throwing off the shifts (auto with a locked tcm). My own car SS/A8 going from the stock 275/35-20 runflats to a 305/45-17 MT (taller) saw a pretty modest improvement. Stock=1.83 short and 12.06@114, MT=1.76 short and 11.97@113. Once I bought HPT and was able to log, I found that the tall tires were screwing up the shift points. When they figured out how to unlock the t87a tcm so we can tune it, I was then able to fix things.