ikankoi

guys:

i developed this table during my downtime in the office (yea.. got so bored waiitng for this quarter ends)...

anyway, the purpose of this table is to know how much (in mm) the outter edge of new wheel will "stick out" compared to the stock wheel position

basic fomula:
outter edge position = width/2 - offset (in mm)

i use the stock 98 GS300 for inital data:

stock wheel data:
width offset initial frontspacing
7.5 +55 40


Outside wheel edge extension (mm)
wheel width (inch)
offset 7.5 8 8.5 9 9.5 10 10.5 11
-------------------------------------------------------------------------------------------------------------------------------------
+48 7 13 20 26 32 39 45 51
+47 8 14 21 27 33 40 46 52
+46 9 15 22 28 34 41 47 53
+45 10 16 23 29 35 42 48 54
+44 11 17 24 30 36 43 49 55
+43 12 18 25 31 37 44 50 56
+42 13 19 26 32 38 45 51 57
+41 14 20 27 33 39 46 52 58
+40 15 21 28 34 40 47 53 59
+39 16 22 29 35 41 48 54 60
+38 17 23 30 36 42 49 55 61
+37 18 24 31 37 43 50 56 62
+36 19 25 32 38 44 51 57 63
+35 20 26 33 39 45 52 58 64


so this is how to use the table:
if someone with stock 7.5"/+55 rims wants to upgrade to 9.5"/+38, he/she would expect the new wheels outter edge will be approximately 42mm "sticking out" from the current stock outter edge position. just use a ruler, measure it exactly from the edge of the stock rim and for thatn given mm is where the new wheel's otter edge would be

hopefully it can help to answer some the offset issue.. i developed it in excel so anybody want to use different stock wheel size for the initial outter edge position, just change the stock tire data ad it will calculate new values... just let me know if anybody needs it...

ikankoi

eeekkk...all the tabs are merged ...
just view this attached txt file then

Mikesgs3

thanks woot!