[chulooz]

Originally Posted by poormans_LFA

pays to up the big $$$$

http://asiangiant.wordpress.com/2011/11/14/failure/

or you can pay even more for repairs. choice is yours.

That article is

Quoting among the crap in NASIOC:

originally posted by wtwwholesaletire

I think XXR is kind of getting a bad rap here. We have sold them since they where Essenza wheel back 13 + years ago we have sold thousands.They are made by Primax wheel co and make 2.4 million wheels per year and have been in buisness since 1976.Guys they are not some fly by night junk wheel! They are also Tested to the Japanese VIA standard
Here is a brief outline of testing to JWL spec:

Cornering Fatigue Test (Drum Endurance Test)
The purpose of this test is for checking wheel rim strength and durability. Place a wheel assembly with tire on test equipment. Radial stress is then added to simulate vehicle weight.

Test run 500,000 cycles
After 500,000 cycles inspect for cracks, deformation and any nut loosening.

Radial Load Fatigue Test (Rotary Bending Test)
JWL pass criteria: 100,000 cycles
The purpose of this test is for checking durability of the wheel disc. The spokes and the hub are the first point of weight distribution from the vehicle and spoke strength is gauged by this test.

Place a wheel on testing equipment and by adding bending stress to center of disc –

Test run 100,000 cycles
After 100,000 cycles, inspect for cracks, deformation and any nut loosening.

13 Degree Impact Test
JWL pass criteria: 594 kg

The main purpose of test is for checking strength between rim and disc cross section. The “joint” or the area where the spoke and the rim meet is an important structural area that is subject to great stress. The horizontal weight of the rim and the vertical stress of the spokes meet at this joint and proper structural stability is crucial for a proper wheel.

The wheel assembly is placed with tire tilted 13 degrees from horizontal plane on testing equipment.

A preset weight is dropped on the outer sidewall of tire, thus giving impact to the wheel/tire. Then inspect for cracks, deformation and air leak.

This test is very important for the recent trend of a larger/wider wheel with lower profile tire combination, because there is less air volume than OE wheel/tire and more stress to inner rim section. This test simulates actual usage condition such as hitting corner curb or objects from side.

In Chicagoland we have the nations worst potholes and these have held up as good as any and better then alot of light weight high dollar stuff.Are they top of the line/? no, but they are much better quality then some of you seem to think...

and for the rota haters, check out quotes from race companies that run them:

Originally Posted by GST Motorsports
You're right, they hardly ever see abuse (offs at 130mph, jumping curbing), never see more than 2-3 laps (Thunderhill 25hr Enduro and NASA weekends) and we go through them like water (Haven't bent one yet). Damn. I guess we picked the wrong wheels.

Please don't buy any.

-Bryan

Originally Posted by Turn in Concepts
Money no object for road racing? Forgelines.

We have been using Rotas for 8 year on track and have never had a break or issue. We ran them for the 25 hours of Thunderhill last year and had no issues. Even after getting hit by a Honda (hit was wheel to wheel) the wheel survived and ran for another 2 hours. It wasn't until we came in to pit and change wheels that we saw the damage.

Tony

Originally Posted by LICmotorsports
I must say we have had zero issues with our Rota's...in fact www.wheeldude.com is more than helpful with any and all of our requests. We have yet to have a broken wheel or bend a wheel, typically we don't need a lot of weights, in the rare instance we do need what I would consider more than usual; in all fairness that can be the yahoo who doesn't mount the tire in the appropriate spot. <-- most often the case.

we run Rota DPT 18x10 +35 5x100/114.3 and I believe if I'm not mistaken the weight is 22lbs (I'm sure dan can chime in and say otherwise but thats the number I recall when weighing them). A Enkei RPF1 in that respective size is just about 20lbs. Yes 2lbs of unsprung weight per corner is A LOT when it comes to motorsports (as it effects braking, response, etc...) but dollar for dollar would you say they are that much better or Rota's are that much less? I for sure don't have the answer to that for everyone, we have either run Volk's or Rota's and currently we run Rota's. Best quality/value dollar for dollar in my opinion.

-Noah