Loydster said:
that about is where the issue comes in. 1/2 inch is about the same size as 9/16 but you dont want to use 9/16 for a 1/2 bolt do you. Discount tire tore up all but 3 of my lug nuts using a 1 1/16 socket on my disco and had to replace them at $15.47 each. I have had no further issues since i bought a 27 mm socket and hand it to them when i take it in.
Loyd, your analogy is not very good. Let's do the math:
1/2" = 0.5000"
9/16" = 0.5625"
difference = 1/16" = 0.0625" almost 63 mils (1 mil = 1 thousandths of an inch)
1 1/16" = 1.0625"
27mm = 1.06299"
difference = 0.00049" < 1/2 mil
That's about a 1/2 thousandths of an inch difference between 27 mm and 1 1/16" compared with 63 thousandths difference for the 1/2" to 9/16", or a discrepancy in the earlier analogy of over two orders of magnitude. I'm no expert on tool making, but there's probably more than a one thousandths difference between sockets sized 1 1/16" made by different manufactures and even between those made by the same manufacturer, not Snap-On of course
. Additionally, the 1 1/16" is actually
smaller than the 27 mm. The only reason not to use the 1 1/16" would be if it did not fit over a swelled cap. The idiots at Discount Tire likely used a 1 1/8" socket and went crazy with their impact wrench. Capped lug nuts are generally junk ... Brian has the right idea.