can ANYONE explain to me what offset is and how it is measured... i drive a 92 civic si hb, stock is 40 i believe, correct me if im wrong
thanks

 

actually +45 is more like stock but anything from +35 to +45 and widths of 6.0-7.0 rims should fit fine just as long as you get the right tire size.

185/60 = 14"

195/50 = 15"

205/40 = 16"

i recommend 15" for your car, though.

 

http://www.discounttire.com/dt...s.dos

enjoy

 

In terms of clearance around your tires, the best offset usually depends on the wheel width, so you need to take the wheel width into account when specifying what offset you're asking about.

I believe your stock wheels are 14x5.

 

it isn't that hard to figure out.. let say you have a 15x6.5 with a 45mm offset..
first: You take the 6.5 inches and add another 1 inch to it to account for the extra 1/2 of lip on both side's...

second: You divide the 7.5 inches by 2 and get 3.75 inches

Third : take your offset which is 45 mm and divide that by 25.1 which is 1.79 inches

fourth: Add 1.79 inches and 3.75 inches and that is your backspacing.. 5.54 inches.. That is how much your wheel from your hub to the inner fender sits in.. and the rest of the wheel from the hub out to your outer fender is 1.96 inches.. That is how you can figure out how much clearance you will have both ways.. Anymore Question's let me know

 

im going with a 17x7 40mm Falken rim with Yokohama 205/45/zr17 tires

 

get 205/40 but 15 or 16 would be a lot better imo

 

personally i dont like the looks of 15's or 16's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lil_Wyte &raquo;</TD></TR><TR><TD CLASS="quote">personally i dont like the looks of 15's or 16's</TD></TR></TABLE>ic and oops// i forgot you already mentioned that but 205/40 will be teh right size for yer car and wont screw up yer speedometer readings

 

205/40r17 is the correct size tire for your application

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecsi00 &raquo;</TD></TR><TR><TD CLASS="quote">205/40r17 is the correct size tire for your application</TD></TR></TABLE>

Correct. 205/40-17 is actually a bit too big for your car - 3.6 percent larger diameter than stock - but it's the smallest 17" size commonly available, so you don't have a choice at all. This is one reason why you would be MUCH better off getting 15" or 16" wheels.

205/45-17 is WAY too big (7.2 percent larger than stock, almost two full inches). DON'T DO IT.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr. rlx &raquo;</TD></TR><TR><TD CLASS="quote">ic and oops// i forgot you already mentioned that but 205/40 will be teh right size for yer car and wont screw up yer speedometer readings</TD></TR></TABLE>

Actually, 205/40-17 WILL screw up the speedometer readings, by 3.6 percent, but that's the best he can do in 17".

 

so if i get 16" rims 40offset, and i get a 205/40/r16 tire i wont have any problems? i plan on lowering the car also so its probably the best bet right, and will that throw off my speedo at all?