Apex Forged Sprint Line vs. Forged Enduro Line

[derklink]

Hi all,

I was wondering if anyone has moved from Apex “normal” forged wheels to their new-ish Enduro line or went straight to the Enduro line. Cost is the same.

There is a good video on YT explaining the differences, basically heavier and higher load rating vs lighter and less load rating


Just wondering what your thoughts/experiences are? Would you skip the “normal” forged wheels (Sprint line) or is the Enduro line more for race applications (Mustang Dark Horse R uses them in 18”) and overkill for HPDE Intermediate-Advanced group driving?

Thanks!

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[WItoTX]

I cracked a sprint wheel, with no idea when. Worse, the event I was at, I wasn't pushing the car particularly hard or taking kerbs. I was washing the car and discovered the crack. My next set will be the enduros, but I will keep running the sprints I have. For reference, my car is 38xx lbs with a basically full tank.

 

[derklink]

Interesting and thank you for sharing.

I talked to Apex and they said unless doing W2W or endurance racing or having chassis mounted aero or added power, the Sprint line forged should be fine, and that the enduro line is more for hardcore applications.

How long did you track your wheels before they cracked? From your profile pic, it looks like you’re running big aero and are no slouch, haha, so maybe the Enduro Line is better suited for you.

 

[webspoke]

For our GT500s the enduro line is the best choice. 760hp and 4300-4500lbs race weight on 200tw or grippier (1.3-1.6G) can overstress them. A few of us noticed the issue a couple of years ago and apex stepped up with the enduro line, which adds about 3lbs back to the wheel.

Speed, weight and tire grip factor in, I think over 500hp, 3500lbs and 200tw or better is the good point to switch.

 

[WItoTX]

Interesting and thank you for sharing.

I talked to Apex and they said unless doing W2W or endurance racing or having chassis mounted aero or added power, the Sprint line forged should be fine, and that the enduro line is more for hardcore applications.

How long did you track your wheels before they cracked? From your profile pic, it looks like you’re running big aero and are no slouch, haha, so maybe the Enduro Line is better suited for you.

3 years give or take. I think Webspoke criteria is right. I thought 200 tw wouldn't be too grippy, but I guess it is. Lot's of dynamic loading on these wheels for sure.

 

[John S]

How do the flow-formed wheels compair in strength with forged options, I'm running SM-10 19" x 11.5" on the street but I haven't tracked them, yet?

 

[NightmareMoon]

How do the flow-formed wheels compair in strength with forged options, I'm running SM-10 19" x 11.5" on the street but I haven't tracked them, yet?

it depends.

flow formed is (basically) a forged barrel and a cast face.

so the barrels can be made thinner for equal strength (forged) and the face features / spokes need extra material and mass to be strong enough. Fully forged the face features can be thinner/lighter.

see the manufacturing process doesnt imply anything about strength, any wheel should be as strong as it was designed to be, its just that forging allows you to get that strength with less material.

then there is the structural design apart from the materials - is the design itself strong or does it have integral weaknesses and then theres also quality control - is the raw material good quality, did the manufacturing process introduce any flaws.

so in short its not that Forged wheels mean they are strong or that cast wheels are weak, its just that forged should be strong for the weight and cast should be heavier to get similar strength

 

[webspoke]

From apex, the SM10 in that size has a 1550lb rating, the forged VS-5RS and SM10 RS (19x12) have a 1600lb rating. So basically the same.
The enduro wheels have a 2100lb rating.

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