My neighbor works at a tire store and he mentioned something to me the other day when I had him put two new Yokohama's on my front rims. He said the TII rims have a mark on them that shows that they are approved for use on the Autobahn. It's a funny little mark like JM run together or something like that. Has anyone else ever heard of this?



Here's why I care: The rim for the spare on my car has that mark too. It's an alloy wheel, maybe 4 inches wide, and I'm thinking if I put a real tire on that one and get another one, that they would make good lightweight drag fronts.

Am I nuts, or could that work? Or both? :P

I could be wrong, But I think that's the craziest thing I've heard all day!

i have no idea, but you wouldn't be the first to use the spares as skinnies....



mike

all the rims have a JM on our cars and old school toyotas have that. dont know why. maybe cause theyre made in japan.

I have seen alot of the factory rims here have that mark...

Yeah most factory rims have that, it has nothing to do with what the rims are capable of. Sorry

This reminds me ..We need a suspension wheels forum.

Well, okay. I just couldn't accept it. So I did some more research. It seems that the mark, which is actually a "JWL", IS a certification indicating that the wheel has met Japanese standards for roadworthiness. It is often mentioned in conjunction with "TUV certification" which is the German equivalent. I include the following quote from adsforcars.com:



This symbol indicates that the wheels meet the technical standards for passenger car light alloy wheels made in Japan or supplied on Japanese vehicles. The symbol (JWL) means "Japan Wheel Light Metal" standard mark.

Okay, I know you guys are hungry for more info on this topic https://www.nopistons.com/forums/pub...1047683785.gif

STANDARD

JWL:(JAPAN LIGHT ALLOY WHEEL):

The technical standard for Light Alloy Disc Wheels for Passenger Car

approved by Ministry of Transport (MOT)



JWL-T:(JAPAN LIGHT ALLOY WHEEL TRUCK & BUS):

The technical standard for Light Alloy Didc Wheels for Truck and Bus

approved by Ministry of Transport (MOT)



VIA :(VEHICLE INSPECTION ASSOSIATION) Registration System :

marking can only be engraved on the wheel is registered by Japan

Light Alloy Automotive Wheel Testing Council after strict quality

tests by the authorized testing facility on the adaptability ofor

technical standard.







There is the following thing in the prescribed examination.

??Dynamic cornering fatigue test

??A load in the cornering is presumed, and the strength of the disk part is

? ?asked to a master.?It is bent concretely in the wheel, and cornering

?? moment load is given, and the regular number of rotation is turned,

?? and strength is confirmed.

??Dynamic radial fatigue test

??A load in the vertical direction is given to the wheel concretely by a test

?? to do to ask a master the strength of rim part, and the regular number

?? of rotation is turned, and strength is confirmed.

??Impact test

??A weight is made to fall into the wheel, and the whole strength

?? is confirmed.



?JAWA (Japan Light Alloy Wheel Association )

So there you have it. It appears that the JWL mark on a wheel indicates that the wheel has undergone and passed tests for:



Dynamic cornering fatigue,

Dynamic radial fatigue, and Impact resistance.