Omega Owners Forum
Chat Area => General Car Chat => Topic started by: bigtow on 07 June 2010, 20:08:14
-
Hi anyone know how to work outr a wheels et . I have some 8j aftermarket alloys but they don't have the et marked on them . I have measured from across the rearmost outer edge of the wheel to the mounting flange and this is 155mm . But what is the et help please ?
-
I seem to recall its the distance you have measured minus half the total alloy width
-
Hi anyone know how to work outr a wheels et . I have some 8j aftermarket alloys but they don't have the et marked on them . I have measured from across the rearmost outer edge of the wheel to the mounting flange and this is 155mm . But what is the et help please ?
Answered in this thread http://www.omegaowners.com/forum/YaBB.pl?num=1274910418/0
-
Which confirms what I said, thanks :y
-
Thanks guys
-
Agggggggg I hope I have worked it out wrong as I make it that the wheels have a et of 53. Which is outside of the spec for a omega apart from getting new wheels is there any way to correct this ? :'(
-
Some good info on here, with a comparator as well...
http://www.carbibles.com/tyre_bible_pg4.html
-
have just read all of that - he's correct in stating the importance of rolling radius - and then goes about adding it up the wrong way.
rolling radius CANNOT be calculated. period. The only way to establish the rolling radius is to put a tyre on the rim and measure how many times it rotates in a mile. This will be different (by up to 10%) from the figure calculated by the method on that page.
tyre manufacturers do publish wheel revs per mile, but they take a bit of getting hold of.
-
.......
rolling radius CANNOT be calculated. period. The only way to ......
Arrrgh! FULL STOP!!!!!!!!! USA call it a bl00dy period! ........ and breathe! ::) ::) ;)
-
I kinda wanted it to come across in the US-way, as in "extended silence to emphasise the previous point"