Extended Wheel Studs

Cdsbblue

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I bought some Apex EC-7 18x9.5 wheels (et 58) and Falken 660's for the track. When I put the wheels on, I noted that the thread engagement looked lite. Turns out, I could only get about 8.25-8.5 turns from first engagement. Given that the studs have a 1.5mm thread, I think you need closer to 9.5 turns to get to the 14mm diameter of the stud.

I purchased MSI extended studs from United Speed Racing in Cumming Georgia. Based on some posts for the FK8s, I assumed I'd have to at least remove the upper lower ball joint for the front wheels. Turns out, it could not have been easier. After removing the caliper and disc, I used a Honda ball joint separator (i got it from Honda Factory parts on the web) to push out the original studs (to avoid using a hammer), and dremeled a small section of the heat shield. The studs just popped right in. Tightened them with an impact gun with 4 washers and a lug nut.

A couple of points. First, I am not certain that cutting the heat shield was necessary for the front wheels. I foolishly trimmed it before even testing it out, and trimmed a bigger piece than could possibly be necessary because I wanted the cuts to be closer to the heat shield screws. Second, I think that one of the reasons that this was easier was that the MSI extended studs, as racing studs, have a taper at the end (see below). That gives the benefit of some wiggle. I am not sure that the ARP studs with full threads would go in as easily.

Below are pics of the stud comparisons, and a couple of the sloppy front and rear heat shield trim. The picture with the stud in the hub was intended to show how much room you have, but doesn't really show much. The stud really just drops right in - no banging or crazy manipulating.

11th Gen Honda Civic Extended Wheel Studs studs


11th Gen Honda Civic Extended Wheel Studs front


11th Gen Honda Civic Extended Wheel Studs IMG-0090


11th Gen Honda Civic Extended Wheel Studs rear
 

yeaitsahonda

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Thanks for the post! I bought the same wheels and tires but have only got around to mounting one up so far. Good to have some warning that I'll need to get new studs also.
 
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Cdsbblue

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First thing I tried as a stop gap were extended thread studs. No go with those wheels. Thought I'd save you the hassle in case you considered that.
 

yeaitsahonda

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Good to know. Thanks for the heads up. Just looked at how much extended studs are o_O. Reminding me why I really wanted to keep this thing stock haha.
 
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Cdsbblue

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Well, the MSI studs are crazy expensive - I think the ARPs are quite a bit less. MSI is not something I'd consider if I weren't tracking a bunch. Also, note that I got the EC-7 with 58 offset. If you got a lesser offset, you might not need to worry about it. I'd just check it out first to make sure you don't get enough turns. If you're not tracking the car, you might even be able to get away with 8.25-8.5 turns. I just know for the track, you need at least to engage 14MM of threads.
 


yeaitsahonda

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Yea I bought the exact same wheels/tires for the same purpose so I’ll likely bite the bullet and order the same studs. Quick google search showed ARP studs were around $250 for the set so not much different. Gotta pay to play I guess.
 

yeaitsahonda

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Did you happen to get a pic with the OEM wheels on? I'm probably going to swap back to them between events and am curious about how goofy the extended studs are going to look.
 
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Cdsbblue

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For the money, I'd go with MSI. Didn't think to try the OEMS on. Let me know if this is really a critical decision point, and I'll slap an OEM wheel on and post a pic. I think they'll definitely look a bit goofy and you'll have to use open end ball seat nuts unless you can find super long ones (instead of the 60 degree cone nuts for the Apex). Some guys actually like the look and use colored wheel nuts to show them off a bit.
 

yeaitsahonda

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Not a big deal. Definitely don’t put them back on just to get a pic. If it needs the studs it’s gotta happen no matter how it will look. I’m gonna stay after work today to get the rest of mine mounted up and take a look at the studs.
 
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Cdsbblue

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You prolly don't need this advice, but when you're trying to measure number of turns, put a dab of something on the nut so you can see the turns. I was trying to eyeball it and just kept losing count - felt like an idiot.
 


yeaitsahonda

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Mine had the same 8.5 turns on the front before touching the wheel. Rears were 10ish. Honestly, if I hadn't seen this thread I probably wouldn't have thought twice about it. But since I did and I researched online I guess they are technically about 1 turn shy of where they should be. Gonna run it like it is for this weekends autocross but I'll be getting extended studs before my next track day. Still debating about maybe just doing the fronts.
 

j5fl5

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Did you buy FK8 extended studs? I don't see any MSI or ARP part numbers for the FL5 yet.
 
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Cdsbblue

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I bought the MSI from United Speed Racing. Pretty sure fk8 and fl5 are the same. Take a look at the website or give them a call to confirm.
 
 







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