Planning out an s13 five lug conversion is pretty much a rite of passage for 240SX owners who are tired of the limited wheel options that come with the stock 4x114.3 setup. Honestly, if you've spent more than five minutes browsing for cool wheels online, you've probably noticed that all the best offsets and designs are made for five-lug cars. It's annoying, but it's just the reality of the drift and tuner scene. Swapping those hubs out opens up a whole world of possibilities, not just for wheels, but for big brake kits too.
Let's be real—the stock S13 setup is getting old. Parts are wearing out, and if you're still rocking the original four-lug hubs, there's a good chance those bearings have seen better days anyway. If you're going to spend the money to refresh your suspension, you might as well step up to the 5x114.3 standard. It's one of those mods that makes the car feel more modern and a lot more capable.
Why Bother Swapping to Five Lug?
Aside from the obvious "it looks better" argument, there are some practical reasons to pull the trigger on an s13 five lug conversion. The most common reason is definitely wheel selection. If you want to run genuine Work, Volk, or even just some decent-looking reps without using sketchy adapters, you need those five studs.
Then there's the brake situation. S13 stock brakes are fine, I guess, if you're just cruising to the grocery store. But if you're actually driving the car hard or drifting, they fade faster than a cheap haircut. Moving to five lug makes it way easier to bolt on Z32 (300ZX), Skyline, or even Q45 brakes. You get more clamping power and better heat dissipation, which you'll definitely appreciate the first time you're coming hot into a corner.
Navigating the Front Hub Dilemma
The front of the S13 is where most people get a little tripped up. You basically have two main paths you can take. The first is the "OEM plus" route, which involves using S14 front spindles and hubs. It sounds simple, but there's a catch: the S14 spindle uses a larger 14mm bolt for the strut mounting, while the S13 uses 12mm bolts. You'll either need to drill out your S13 struts or buy special sleeves to make it work.
The second option—and the one most people go for these days—is buying aftermarket conversion hubs. Companies like Ichiba, Megan Racing, or even some of the higher-end drift brands make hubs that slide right onto your existing S13 spindles. It's a lot less of a headache. You don't have to mess with the ball joints or the spindles; you just pull the old hub off, slide the new one on, and torque it down. Just make sure you aren't buying the cheapest possible hubs you find on a random auction site. Your wheels are literally the only thing keeping you on the road, so this isn't the place to save twenty bucks.
Sorting Out the Rear End
Thankfully, the rear is a bit more straightforward, but it still has its quirks. You can grab hubs from an S14 or a non-turbo Z32. They usually bolt right into the S13 upright. If you go the Z32 route, just make sure you're getting the non-turbo ones because the turbo (TT) versions have a different spline count on the axles.
One thing to keep in mind is the bearing condition. If you're pulling hubs from a junkyard or a marketplace seller, you're betting on 30-year-old metal. Personally, I think it's worth buying new bearings or just going with a complete aftermarket rear hub kit. It saves you the trouble of having to do the job twice when that old junkyard bearing starts humming a week after you install it.
The "While You're In There" List
We've all been there. You start a "quick" Saturday project and suddenly the whole car is in pieces because you decided to fix everything else. When doing an s13 five lug conversion, there are a few things you'd be crazy not to check.
First off, check your ball joints. If they're original, they're probably toast. Replacing them while the spindles are off is a million times easier. Same goes for your tie rod ends.
Then there are the brake rotors. Your old 4-lug rotors obviously aren't going to fit anymore. You'll need to either redrill your current rotors (please don't do this) or buy 5-lug versions. If you're sticking with stock S13 calipers for a bit, you can actually buy S13-specific rotors that come pre-drilled for five lug. But again, if you're already doing all this work, it's the perfect time to just upgrade to Z32 calipers and call it a day.
The Reality of Fitment and Spacers
One thing nobody tells you about switching to five lug is that it might actually change your wheel fitment slightly. Some aftermarket hubs are a tiny bit thicker than the stock ones, which can push your wheels out a few millimeters. It's usually not enough to ruin your life, but if you're running a "frame-laying" fitment with zero clearance, it's something to watch out for.
Also, check your wheel studs. Some conversion kits come with standard-length studs, while others come with extended ones. If you're planning on running spacers to get that perfect flush look, you're going to want those extended studs anyway. Just make sure you have the right lug nuts to match. Nothing kills the vibe of a fresh swap like realize you have the wrong thread pitch halfway through the job.
Installation Tips for the Average Garage Mechanic
If you're doing this on your back in a driveway, get yourself a decent impact gun. Those axle nuts are usually on there with the strength of a thousand suns. Also, have a sturdy puller on hand. Sometimes the old hubs are basically fused to the spindle after decades of heat cycles and road salt.
When you're putting the new hubs on, use a bit of anti-seize. The future version of you will be very grateful if you ever have to take things apart again. And for the love of all things holy, use a torque wrench. Over-tightening an axle nut can crush the bearing race, and under-tightening it can lead to well, your wheel falling off. Neither is a great Saturday afternoon.
Is It Worth the Cost?
Let's talk money. A full s13 five lug conversion isn't exactly "cheap" when you factor in the hubs, rotors, and the inevitable "I might as well buy this too" parts. You're probably looking at anywhere from $400 to $800 depending on if you go with used OEM parts or brand-new aftermarket stuff.
Is it worth it? Absolutely. It's one of the few mods that pays for itself in terms of convenience and car value. Plus, once you have that 5x114.3 bolt pattern, finding used wheels becomes so much easier. You won't be stuck hunting through the "4-lug" section of classifieds where everything is either a weird old-school mesh wheel or a generic hubcap replacement.
Wrapping It Up
At the end of the day, an s13 five lug conversion is a foundational mod. It's not flashy like a big turbo or a crazy body kit, but it sets the stage for everything else you want to do with the car. It gives you the freedom to choose better wheels, run better brakes, and generally makes the car feel more robust.
If you're on the fence, just do it. Stop browsing those 4-lug wheels that you're only "okay" with and open up the door to the stuff you actually want. Just take your time, don't cut corners on the bearings, and make sure everything is torqued down right. Your S13 will thank you, and it'll look a whole lot better sitting on a proper set of five-lug rollers.