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View Full Version : wheel offset.....quick please


revat619
11-30-2002, 04:28 AM
I want to buy my wheels pretty soon, so i need to know if these are good offsets to go with.

the wheels: 17x8 +31 offset and 17x9 +38 offset

and yes, i know about the disadvantages of staggered wheels on a N/A car....the turbo is coming....shhhh <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/sly.gif" border="0" valign="absmiddle" alt=':sly:'> &nbsp;i just need to know the optimal offsets. Thanks.

planb
11-30-2002, 01:46 PM
those are good offsets.

revat619
12-01-2002, 12:43 PM
So will these offsets make the wheels flush with the fenders? Will i have room for Z brakes in the front? How big will the lip be on the front and back? i was hoping for a deeper lip in the rear. I know the rim is wider in the rear, but the offset is higher. The wheels are Racing Hart M5 3-piece. Thanks

gtfour43
12-01-2002, 12:48 PM
I've got +37 front and back. 17X8's in the front and 17X9 in the back. They are flush with the fenders. The size of the lip will vary with different rims styles.

revat619
12-01-2002, 02:53 PM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (revat619 @ Dec. 01 2002,1:43)</td></tr><tr><td id="QUOTE">The wheels are Racing Hart M5 3-piece.</td></tr></table><span id='postcolor'>
so.....???

ruf
12-01-2002, 05:13 PM
The rears will have 6mm more lip/dish than the fronts depending on the design of the wheel.

You are growing 12.7mm in "outside width" (1/2") and taking back 7mm (38-31mm) of that in offset. The inside lip will be 20mm farther inside than the fronts

revat619
12-01-2002, 05:34 PM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (ruf @ Dec. 01 2002,6:13)</td></tr><tr><td id="QUOTE">The rears will have 6mm more lip/dish than the fronts depending on the design of the wheel.

You are growing 12.7mm in "outside width" (1/2") and taking back 7mm (38-31mm) of that in offset. The inside lip will be 20mm farther inside than the fronts</td></tr></table><span id='postcolor'>
i sort of understand what you're saying. So the the rear lip will be deeper than the front by 20mm?

once again, the wheels are Racing Hart M5 3-piece

here's a pic


http://www.racinghartdirect.com/images/racinghartm52.jpg

adey
12-01-2002, 08:50 PM
We cannot tell you exactly how much lip you're going to have with the M5 3 piece, so don't ask. Zilvia may know a lot, but super-specific info like what you're asking (how much more lip, EXACTLY, one specific wheel design will have, whether or not Z brakes will fit, how flush it will be with fender) is not known by anyone but owners of that exact rim with the same car/specs/tires as you, or possibly the manufacturer.
You're wasting your time here if you think we have all the answers to all your questions.

revat619
12-01-2002, 09:53 PM
adey- its been said on this site that z brakes fit with right offset. Thats what i was asking. I couldn't find the post where it said what it was.

What the hell man. I know people wont know the exact answer, unless they have the wheel....im not a dumbass.

I wasnt exactly sure of what ruf was talking about which is why i asked again to clarify if thats what he meant.( did you see the question mark in my last post.....obviously not).

I didnt think i was asking a "super-specific" question. A simple "That should/shouldnt work, that (doesnt)sound(s) ok" would've been fine. &nbsp;Ruf's info was more than i expected and very much appreciated, i just didnt understand it completely.

You didnt help the situation at all by acting like an ass. Since you couldnt help in anyway, why didnt you just keep your "mouth" shut. &nbsp;<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/hmmm.gif" border="0" valign="absmiddle" alt=':hmmm:'>

ruf
12-02-2002, 02:04 AM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (revat619 @ Dec. 01 2002,6:34)</td></tr><tr><td id="QUOTE"></span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (ruf @ Dec. 01 2002,6:13)</td></tr><tr><td id="QUOTE">The rears will have 6mm more lip/dish than the fronts depending on the design of the wheel.

You are growing 12.7mm in "outside width" (1/2") and taking back 7mm (38-31mm) of that in offset. The inside lip will be 20mm farther inside than the fronts</td></tr></table><span id='postcolor'>
i sort of understand what you're saying. So the the rear lip will be deeper than the front by 20mm?

once again, the wheels are Racing Hart M5 3-piece

here's a pic


http://www.racinghartdirect.com/images/racinghartm52.jpg</td></tr></table><span id='postcolor'>
No. The rears will have about 6mm more lip than the front. You will have 20mm less clearance on the inside to the strut.

I'm guessing on the lip. They could very well take up the rest of the 6mm in the spoke design.

revat619
12-02-2002, 03:14 AM
so generally speaking, with a 9 in. wide wheel in the rear, you should usually go with a lower offset for clearance on the S14.
Depending on the design of the wheel.

Thanks again ruf for your help. I appreciate it. Sorry if im asking annoying questions. I just want to make sure i understand.

adey
12-02-2002, 05:32 AM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (revat619 @ Dec. 01 2002,8:53)</td></tr><tr><td id="QUOTE">its been said on this site that z brakes fit with right offset. Thats what i was asking. I couldn't find the post where it said what it was.</td></tr></table><span id='postcolor'>
This has been said... but you're missing another very, VERY important factor, which is SPOKE DESIGN. This has also been posted numerous times, but it seems that your search results didn't reflect this, or maybe you overlooked it.

To illustrate for you... my 15x7 +5 (that's right, +5mm) did NOT clear stock brakes, whereas kosei K1s in 15x7 +27 will clear stock AND Z32 brakes.
I'm sure you've found that lower offsets will clear brakes and coilovers but may have fender-rubbing issues, while high offsted rims will have coilover and possibly brake clearance issues, though they will not rub fenders.

What I mean (and meant) to say was that we can't say for sure whether or not a certain rim will clear Z brakes because while the offset may be low, the spoke design may be such that it won't clear the calipers.
The notion that offset is the ONLY factor in clearing brakes is completely false.

revat619
12-02-2002, 10:42 AM
oh ok. Thank you for clearing that up. You're right, I completely forgot about the spoke design factor in my search. I apologize for our misunderstanding. Thanks to everyone for their input. I appreciate it.

Silkk
12-02-2002, 01:13 PM
since we're on this topic...

I just bought a set of Buddy Club wheels, 17x7 with a +42 offset.

Will I have problems with fitment? &nbsp;I drive a '95 S14

Thanx!

Dousan_PG
12-02-2002, 01:40 PM
woah! your wheels will be WAAAAY sunken in, like stock. looks like ass

should clear your brakes and springs/shocks (if stock) ok
if you have coilovers you wont clear them. too high offset..that's an offset for front wheel drive cars (on average)

Silkk
12-02-2002, 02:41 PM
Hmm... Would spacers help?

four
12-02-2002, 04:12 PM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (dousan36 @ Dec. 02 2002,3:40)</td></tr><tr><td id="QUOTE">woah! your wheels will be WAAAAY sunken in, like stock. looks like ass

should clear your brakes and springs/shocks (if stock) ok
if you have coilovers you wont clear them. too high offset..that's an offset for front wheel drive cars (on average)</td></tr></table><span id='postcolor'>
so whats an average offset for us RWD?? cuz i though 40 was good enough

Dousan_PG
12-02-2002, 04:12 PM
yeah definately. 5 mm if you are using stock studs
10 mm if you buy longer studs. i wouldnt suggest using 10 mm spacer w/o longer studs

of course you can get a bolt on spacer that bolts to stock studs then bolts to the wheel is best...but either way
it will be good. get the wheel relatively flush with fender (no it wont be PERFECTLY flush)

adey
12-03-2002, 02:43 AM
</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (four @ Dec. 02 2002,3:12)</td></tr><tr><td id="QUOTE">so whats an average offset for us RWD?? cuz i though 40 was good enough</td></tr></table><span id='postcolor'>
+40 is very high for our cars... it's stock. <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'> &nbsp;On a 15x7 rim, +25 - +35 is nice IMO.
It's not a matter of RWD or FWD, it just depends on the car. For instance, Supras tend to have high offset wheels (~+45), while AE86 do not (~+10). Both are rwd cars.

For our cars, my personal tastes are that 15x7 +15 is "perfect" out back (some like +10 or +5... +5 you will need to roll fenders) while 15x7 +20 or so is "perfect" up front. Of course, this is also a highly subjective matter... I will be using spacers with my 16x7 +35 and 16x8 +38 mainly for a more flush look, but also for the wider track. When I do get my fenders rolled, I will probably keep the +5 offset rims in rear, and go maybe +10 in front or so.

Silkk
12-03-2002, 01:46 PM
cool, thanks for the info!