OK - so bought some different wheels for my '07 taco from a guy with a
chevy 6 lug truck and learned all about the 4 inch hub on the tacomas the
hard way. Went to put them on back at home, had a nice 'OH SH$T' moment, but then found this thread and the redirect to Leer's article about machining the bore out with a router and rabbiting bit. Googling
came back with a ton of other references and videos on doing this too.
Last Friday afternoon I busted my 'big bertha' router and a fresh bit along
with a can of WD-40 (makes a huge difference) and proceeded to make lots of alloy shavings in the hope of ending up with wheels that fit my truck. The short of it was that I took my time and ended up with 4 wheels
with perfect 4 1/8" wide by 1/2" deep bores that fit perfectly and am now sporting a nice set of very polished American Racing 16x8 simulated beadlocks with radiant red beadlock rings that match my 07 taco dbl cab. Looks sweet and very happy with the result. I even had a machinist neighbor stop when he saw me routing a wheel to see what the hell I was doing. After looking at them - he said routing was pretty ballsy...but was
amazed with how well it worked and said there was plenty of meat left on the wheel to handle the load. I am betting he will pass on buying another CNC in favor of buying a nice new Cable Porter router next time!