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Old 12-24-2017, 09:24 PM   #1  
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Default 15x9 Advanti Storm (S1 vs. S2 Comparison)

I've been tracking 15x9 Advanti Storm S1 wheels for the last 3.5 years. In that time, I've bought 12 and 4 remain serviceable. Of the 8 wheels that died, 5 had bent rims and 3 developed cracks. The way that the S1 cracks is unusual, it develops a radial crack in the hub adjacent to a lug hole. This cracking mode was consistent for all of the cracked wheels. This failure mode is pretty safe - it leads to a vibration rather than a catastrophic spoke failure. Here are a couple of pictures of the failure:



Went on Tire Rack the other day to order some tires and replacement wheels (I like having a dry set and a rain set). I noticed a newer Advanti model, the S2. In 15x9, it was ~0.5lbs heavier than the S1 and appears to have addressed the weak spot I discovered. It is a 12-spoke wheel optimized for a 4-lug hub (the S-1 has 10-spokes). There is a LOT more material around the lug hole. It also has lightening/cooling slots machined into the hub which should be a nice feature to shed heat from our highly-loaded front hubs. I ordered the S-2s and am planning to run them with dry tires and relegate my S-1s to rain duty.

Here are some pictures I took after receiving the S-2s:
Wheel Face (first picture S-1, second picture S-2):



Oblique View of Hub (first picture S-1, second picture S-2):



Perpendicular View of Hub (first picture S-1, second picture S-2):



Rear View of Hub (first picture S-1, second picture S-2):

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Old 12-25-2017, 01:03 PM   #2  
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I never liked the look/weight of the S2, but it actually looks like a much stronger design. Maybe I'll move my S1s to street duty and pick up a set of S2s for the track. Nice find.
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Old 12-25-2017, 05:14 PM   #3  
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I just picked up a set of S2s for cheap. Will see how they'll hold up.
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Old 12-25-2017, 05:43 PM   #4  
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Everyone appreciates solid info, like-cat awarded!
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Old 12-25-2017, 06:05 PM   #5  
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Good find. Looks like the s2 was designed specifically as a 4-lug wheel given the layout of spokes - I wonder if it actually was to address the cracking issue you've seen.

Kinda funny, but now that I see the design as based on function the S2's look better than I thought previously...
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Old 12-25-2017, 06:49 PM   #6  
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Quote:
Originally Posted by Junkwhale View Post
I wonder if it actually was to address the cracking issue you've seen.
I strongly suspect that it was, but that is conjecture. I felt like the S-1s cracked too soon and the weak point is pretty obvious in hindsight. OTOH, there's something to be said for an engineered weak point that leads to a relatively harmless failure. It would be much worse if the spokes failed.
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Old 01-15-2018, 01:53 PM   #7  
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If you don't mind, I like to see these wheels installed on your car when you install them!
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Old 01-19-2018, 05:08 PM   #8  
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If you don't mind, I like to see these wheels installed on your car when you install them!
OK.



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Old 01-19-2018, 06:06 PM   #9  
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Looks good! I definitely prefer those over the S1s.
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Old 01-20-2018, 10:07 AM   #10  
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Those look a lot better on the car than off. The weird spokes are kind of cool in a way :P.
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Old 01-20-2018, 10:14 AM   #11  
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Whats the clearance like with the Wilwood dynalites? any spacer needed?
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Old 01-20-2018, 02:12 PM   #12  
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Whats the clearance like with the Wilwood dynalites? any spacer needed?
No. Tons of clearance.
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Old 04-21-2018, 12:16 PM   #13  
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S2 appeance is horrifying.
🤮

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Old 05-15-2018, 06:36 PM   #14  
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Hornetball,

Was there any paint/powder coat/finish on the lug seats? The last set of new wheels (not Advantis) I purchased had the wheel finish on the lug seats. Torquing the lugs crushed and separated the finish from the wheel, causing the lugs to work loose on track, which is always awesome.
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Old 05-15-2018, 07:38 PM   #15  
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Just as a data point, the holes on my NC 5 hole rims line up perfectly with the thickest part of the spokes.
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