I know tires have load ratings (84 = 500kg or 1100 lbs is the
minimum for an MC or MCS), but my wheels have load ratings
embossed on the rim for the various bolt patterns available.
I have SSR GT1's in 16x7 --- around the rim there's: 4x100 - 500kg;
5x100 - 505kg; 4x114.3 -620kg; and VIA - 690 kg.
don't recall seeing a load rating on any other wheels lately, not
even hiding on the back.
Actually, since the SSR's are semi-solid forged, I thought they'd
be rated a bit higher than 500kg for the 4x100 wheel bolt pattern.
Are the SSR comp's rating (about 3 lbs lighter per wheel) the same or
different? Any other brands list this? Perhaps Alex has some info.
By the way, I love these wheels, and have had no problems with strength
in over a year of spirited driving on less than ideal roads.:smile:

 

I though the load rating is a target rating intended for its use and then it is a matter of how much lighter they can make the wheel by using less but higher density material to maintain that load rating.

minihuni, alex, do you know?



I like my Comps too.

 

I have seen the GT1s up close and did notice the same markings for different bolt patterns last weekend at the track. load rating of 84 corresponds to the 500 kg on the rim. For the MCS the common stock tires have load ratings about 86 to 88. Generally we try to use tires that are in this same load range so that the tires can handle a fully loaded MCS without exceeding the load capacity of the tires as based on the manufactorer's testing.

The rims also have a load rating and the GT1 has it clearly marked. A few other rims may have this too but not many do. Obviously it would not be a maximum load rating of 500kg for this rim which is quite strong.

Try calling/emailing Alex@tirerack and ask him for the lowdown on these interesting markings and then please do post the answer so we can understand why SSR took the time to forge the rims with those numbers.

 

I am doing some double checking on SSR data.

Typically wheels in a given bolt cirle are targeted to application -
the less lugs and the closer the spread the less heavy the target vehicle is. (Think of 1 ton trucks - more lugs bigger circle)

In this care SSR uses SSF to reduce mass, while maintaining strenth.
If the SSR weighed 25 lbs like and S light, it in theory would get a higher rating.

Balance that with reality of application to target vechles load requirements -

Hence a Civic doesn't need more than 1100 lbs a wheel - so lets make his wheel lighter, and help him overcome horsepower restrictions.


Alex

 

Thanks Alex,

I'll edit this:
In this care SSR uses SSF to reduce mass, while maintaining strenth.
to read-
In this case SSR uses SSF (semi-solid forged method of wheel manufacturing) to reduce mass, while maintaining strength.

I'm noticing those numbers are on other SSR rims as well.

 

My SSR Comp 16x6.5's are marked the same.

 

Thanks....was just about to ask if someone would post about the ratings
on the comps! :smile:

 

In the world of the design engineer, EVERYTHING has a load rating that is subject to any kind of load....and everything is subject to loads.......in vehicles, tires, wheels, bearings, seals, axle stubs, suspension pieces, suspension bushes, suspension bolts, suspension nuts....ad infinitum........