On Tue, 04 Sep 2012 08:35:13 -0700, <
c...@nospam.netunix.com> wrote:
> eatmorepies <
jcki...@lineone.net> wrote:
>> I have a RAV4 2011 with no spare wheel, just a can of foam stuff and a
>> fag
>> lighter pump. A nice man on eBay will sell me a wheel or wheels but
>> there's
>> tiny difference in the codes stamped on them.
>>
>> My wheel 17x7J 45 4P J DOT 55 his wheels 17x7J 45 4P J DOT 53. His
>> come
>> off a 2010 RAV4. They are the same spoke pattern as my wheels.
>>
>> Question - what's the DOT number and does it mean the wheels won't fit?
>
> Its a merkin approval thing. Department Of Trade.
> Just like the DOT3 and DOT4 hydraulic fluid.
> IOW, just a nerlier test approval on the same wheel.
Transportation, not Trade.
This is interesting. (For certain pedantic levels of "interesting." Trying
to decipher US government regs is a masochistic exercise.)
I found various standards that say "DOT" must be printed on the rim, but
nothing to explain what the 52 or 55 is, other than a code that says who
the manufacturer is and the date it was made, (except that 52 & 55 are not
on the lists.)
http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmcsrruletext.aspx?reg=571.110
"(c) The symbol DOT, constituting a certification by the manufacturer of
the rim that the rim complies with all applicable Federal motor vehicle
safety standards."
FWIW, the standards for brake fluids show the very different requirements
for grades 3, 4, & 5:
http://www.fmcsa.dot.gov/rules-regulations/administration/fmcsr/fmcsrruletext.aspx?reg=571.116