The lug nut size for a 240sx with a four lug pattern is 10x1.25. The lug nut size is 12x1,25
if it is the 4 lug its a 4x114.3..... if it has been converted to 5 lug= 5x114.3
240SX came with 2 different lug patterns. All 1989 to 1994 240sx came with a 4 lug 4x114.3 pattern. While the 1995-1998 240sx SE/LE's came with a 5 lug 5x114.3 pattern. Preferrably you'd want to find a wheel with less than +30 offset for 240SX's.
I believe for yours it is 5x114.3. As for the 1989-1996 240sx is a 15x6 wheel with 4x114.3 or as for the 1995-1696 240sx se is a 16x5.5 wheel with a 5x114.3. Reference: http://www.discountedwheelwarehouse.com/Nissan___Vehicle_Bolt_Pattern_Reference.cfm
12X1.25
4 Lug to 5 LugYou will just need the 5 lug rotors, and 5 lug Wheel hub's. They are both easy and pretty cheap to get from A) a junk yard if your lucky, B) your local Nissan dealership C) through a website that sells them.
It should be around 80 lb/ft. To be sure look in your owner's manual or call a Nissan dealer. Do not over-torque or you will warp the rotors.
the nuts are 12mm x 1.25inch long from http://www.vehicle-bolt-pattern.com/nissan-lug-reference-guide.html
4-bolt pattern with a 4.5 inch (114.3 mm) bolt circle diameter for nissan Silvia 1989.
well it is either an 18-22 that's a fact
Nissan Maximas bolt pattern is 12 x 1.25 and little advice get the ones have locks because maxima wheels tend to be stolen a lot i think your asking lug nut size.......its ----13/16"
1989 Dodge Ram 150/250 5 lug 5 lug 5.5 inch or 139.7mm Standard Offset