Help Me Work Out Offset

[No Crust Racing]

Hmm offset calc said would have 7mm less clearance internally to the shock so I imagine this rubbing will continue to be an issue, of well.

[nisskid]

yeh depends what size tyre u use, if u used the same size tyre on the 8" as u did on the 7", bit of strectch but ull gain a tiny bit more clearance from the chassis rail at full lock (due to the lower offset). u go a lower profile and ull gain quite a bit more clearance once again. i know it may not make sense, but uve gotta remember on the inside, the different components that u can foul on, foul in different ways.

but yeh ideally for a 8" u want at least a +25 or so offset to get some inner clearance.

[No Crust Racing]

My semi's arrive tomorrow so for DECA it'll be 235/45's on 7" wide rim and then towards the end of the month when the dude sells me those rims it'll be those tyres on an 8" rim.

Edited August 6, 2009 by ActionDan

[nisskid]

yeh doesnt surprise me that's fouling quite hard on full lock. if ur planning on doing drift, ull need to go something like a +25 offset to get that away from the rails on full lock, the problem only gets worse if u put lock spacers in to give you more lock. id say at that point ur probably looking at needing a +20 or so offset. that will be pretty snug up against the guard, but you should be fine with -4 camber as that will tuck it in a lot.

[No Crust Racing]

nah car is going to be more for circuit and on the odd occassion it does see some dorifto it'll be on the 7" rims with skinny rubber so I have any chance of spinning them up

[nisskid]

dunno why ud choose to go skinnier than u have to, why would u want less grip?

[No Crust Racing]

it's not about choosing to go skinnier, it's about having two sets of rims, one set is 8" so they will be my circuit rims as they are more suited to the 235 rubber and another set are 7" so they will be my skid rims because I don't take drift seriously and don't mind if I bang them up plus they will suit the thinner cheapr rubber I have on hand that I don't mind burning up.

[nisskid]

fair enough, personally id be ditching the 7's, useless for performance on a S13, get some cheap 8" or 9" rims. should pic something up for a few hundred.

[No Crust Racing]

I don't care enough about drift to warrant it, personally don't mind what I drift on for the whole 2-3 times a year it'd happen.

8's are coming at the end of the month for circuit though

[No Crust Racing]

Niss: As per my PM on NS

"I've been reading a few offset/clearance threads and you and I seem to be on the same page, that is tyres that fit the rim PROPERLY.

I've got some 235/45/R17 semi's and I'm looking for suitable rims to go with them. At the moment they are ballooned onto my 17x7 ET40 rims and they look bad and don't handle well. also, they JUST clear the springs up front . (-2.5 camber)

I'm thinking 17x8 rims all round (is this wide enough) or if I go 9's all round will I have clearance issues? I'm not sure what offset to get either.

To throw another spanner in it, I've got S15 calipers up front and I'm still running 4 stud.

Thoughts? "

Those enkies I went to get in melb turned out to be 7J up front so I drove home (3hrs) empty handed.

Is an 8 or 9J going to be better and what sort of offset should I be looking for to ensure the inner clearances are OK.

Finding wheels has been an nightmare...

Edited August 26, 2009 by ActionDan

[nisskid]

hey mate, 8" will be wide enough, but u can go up to 9" if you think you might want to go wider in the future, 9" will hold a 255 easily, or u simply prefer a more direct feel (not such an issue with semi slicks due to their stiff sidewalls anyway).

as far as clearance issues, the mac strut on the S13's is known for shitty inner clearance when you go aftermarket coilovers, how much depends on each coilover, but generally the safe point seems to be around 9" +20 where it should clear most coilovers. unfortunately this will push out pretty far in ur guards, especially if u run a 255 down the track. if you want more carefree fitment, u could get away with something like a 8" +30.

u can then go a 9" +30 on the rear and run a 235 there as well if u want, generally when the car is running close to stock power, i find a neutral tyre setup works well on these cars as they do have a bit of understeer from factory, and not heaps of power to put down. but depends on the suspension setup etc, and how much power it's letting u put down.

[No Crust Racing]

hey mate, 8" will be wide enough, but u can go up to 9" if you think you might want to go wider in the future, 9" will hold a 255 easily, or u simply prefer a more direct feel (not such an issue with semi slicks due to their stiff sidewalls anyway).

as far as clearance issues, the mac strut on the S13's is known for shitty inner clearance when you go aftermarket coilovers, how much depends on each coilover, but generally the safe point seems to be around 9" +20 where it should clear most coilovers. unfortunately this will push out pretty far in ur guards, especially if u run a 255 down the track. if you want more carefree fitment, u could get away with something like a 8" +30.

u can then go a 9" +30 on the rear and run a 235 there as well if u want, generally when the car is running close to stock power, i find a neutral tyre setup works well on these cars as they do have a bit of understeer from factory, and not heaps of power to put down. but depends on the suspension setup etc, and how much power it's letting u put down.

Ahh OK, Cheers for that.

So if i can find a set of rims 8" all round and +30 at the highest i should be right, or I could also go 9" and +30 on the back if I find a set that has staggered rim widths.

The car maks SFA power, wouldn't be more than 130rwkw's at the most at present. Will get more down the track.

[No Crust Racing]

Thos Drift Teks seem popular but come in either 8" +34 or 9" + 35 which will give me less clearance than I have now. I'll have to check ow far out the rim is as the tyre is just clearing at my camber settings but I'm not sure where the rim is sitting right now.

[nisskid]

Thos Drift Teks seem popular but come in either 8" +34 or 9" + 35 which will give me less clearance than I have now. I'll have to check ow far out the rim is as the tyre is just clearing at my camber settings but I'm not sure where the rim is sitting right now.

yeh i cant remember if u mentioned what suss u were running, but check the clearance u have now, u might be able to get away with more.

and try to stay away from driftteks, they are expensive cheap junk lol when u look at what u can get 2nd hand, and even new for around the same $$ it seems crazy to buy them.

[No Crust Racing]

I've got BC brand BR coilovers, cheap shit ones but they do the job OK.

I'm having trouble finding almost anything suitablle. I'll get under the car and check out some clearances tonight. Even an 8" wide rim with +30 is going to eat up another 3mm inner clearance..

[nisskid]

yeh 3mm isnt heaps though, and the main thing when it comes to scrubbing on lock is the offset is down. as mentioned chassis scrubbing on lock is to do with tyre size and wheel offset, wheel width plays a insignificant role, as hard as it is to understand.

[No Crust Racing]

Hmmm.... I conclude that S13s suck lol

[nisskid]

pretty much lol

skyline's arent a lot better with their UCA's tho. fronts suck in general.

[No Crust Racing]

what about something like this?

http://www.justjap.com/store/product.php?p...at=0&page=1

wonder if they come in 4 stud?

There's a set of drift teks going right now, tempting, surely they can't be that weak if every has'em on drift cars?

What else could i get in that price range quickly?

[nisskid]

lol im not gonna reccomend drift teks. ull have to look 2nd hand.