I think that PROPER 5-lug upgrade for the 240SX involves quite a lot of parts, but I think that IF its done correctly, its one of the best upgrades you can ever do for the 240SX. To me, the difference between a 4-lug and 5-lug is what makes the 240SX more of a *serious* car. Why? Because:
1) Personally, I think you are limited in terms of rim choice. By rim choice, I mean WIDE rims. Sure, you can get plenty of 15" .. how do we call them nowadays, oh yeah.. "DRIFT RIMS." WHATEVER.. I am not down with these terms, but yeah.. there are plenty of good 15, 16, and even 17" 4-lug wheels.. but they usually arent super-wide. As soon as you step into 5-lug, thats when you broaden your wheel choices. Its only natural, all the bigger cars such as the Z32, FD, and A8 Supra ALL use 5-lug. More lugs = safer, always a nice thing to have.
2) Drilling Z rotors to 4-lug configuration is not ideal, thats just me. After much testing, I feel the Z brake package is not complete unless you do the front, rear, and MC. Using the Z brakes with 15" wheels may not be ideal, especially if you dont have super grippy and/or wide tires. The brakes are powerful and can easily lockup smaller wheels, plus they need a bit of ventillation.. again, larger wheels would be ideal.
Anyway, I know its possible to get performance out of your 4-lug setup.. but why, whats the point.. might as well do things right and go 5-lug, thats just the way I see it.
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