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Rim Width

Started by _dickiep_ , Oct 11 2006 01:06 PM

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21 replies to this topic

#1 _dickiep_

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Posted 11 October 2006 - 01:06 PM

im looking into getting new rims and was wondering what width rim will fit on a lc torrie. im looking into getting decent width as hopefully upgrading to more
power in the next couple of years. the gaurds have been rolled. any ideas? what is everyone running? pics?

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#2 mikew

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Posted 11 October 2006 - 02:55 PM

hey I'd like to know this too...

What is the maximum width, and maximum backspace (or offset for given width) on the front and rear of an LC/LJ and what are the max size tyres to fit inside the guards?!

Cheers!
Mike

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#3 _dickiep_

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Posted 11 October 2006 - 03:40 PM

^^^^^yeah what mikew said.

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#4 mikew

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Posted 11 October 2006 - 11:36 PM

I just did a bit of investigation, and found that according to the new modification rules, since the widest tyre option available on the Torana from Holden was 7", the widest tyre we can legally fit is a 225.

Assuming the profile is 60 or less, the widest allowed rim for a 225 is 9", for a 215 is 8.5", and for a 205 is 8".

So, would a 9" rim on the rear with a 225 tyre fit inside the rear guard? What would the backspace or offset need to be?

What about the front? What backspace or offset required for an 8" or 9" rim?

Comments from anyone running rims wider than 6"?

mike

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#5 orangeLJ

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Posted 16 October 2006 - 05:02 PM

i am currently running 7.5 inch wide wheels on the rear, get a bit of scrubbing with too many people in the car but other then that its fairly good.

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#6 _munro_

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Posted 18 October 2006 - 12:42 AM

i recently picked up some 16x8s they fit under the back nice but are proberbly cop bait on the front.
i'll have to have a check but i think the offset is +18
cheers tom

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#7 _HB1200_

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Posted 19 October 2006 - 08:44 PM

My brother has just bought some 15x8 rears and 15x6.5 fronts for his LC. The car is still in track but I have forgotten the offsets we used. I'll try and trial fit them this weekend and get back to you with the specs and maybe some pics.

HB1200

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#8 RIM-010

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Name:Tim
Location:Cowell, SA
Car:LJ 2 Door - HQ Premier
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Posted 26 October 2006 - 07:43 PM

mikew, what LC/LJ came out with 7" wide rims? Sprintmasters were 6.5" wide...

RIM

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#9 _JBird_

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Posted 26 October 2006 - 11:25 PM

Sprintmasters are actually 6" wide. gtrboyy is running Grange wheels on his LC 18x8s. But then again his car is minitubbed and the front has the brake upgrade similar to hoppers kit. The hoppers kit will move the fronts out by 18mm or 24mm depending on what you specify. Stock LJ/LC offset is 19p whilst commodore offest is 38P. So the hub will move you out 18mm but the commodore wheels will move you in 19mm. We are talking about 6" wide wheels btw.

So to run 17x7s on the front the offset would have to be ideally 37P or less to keep the same scrub radius. When your run 15's they tend to hit the grease nipple on the upper balljoint.

As for the back, I've seen 14x8 GTS wheels fitting no problem, albeit with a custom offset running 245/50R14 tyres. I will be running 17x8 and 17x7 245/30R17 and 235/30R17. That should clear and I will be rolling the rear guards.

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#10 RIM-010

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Name:Tim
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Posted 27 October 2006 - 02:53 PM

Sprintmasters are actually 6" wide.

Thought so. I'll be running 14x7's they should fit no worries... ROH Rebels, if anybody is interested...

RIM

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#11 _JBird_

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Posted 28 October 2006 - 01:06 PM

Just to add to that. The guards were flared (14x8 GTS rims) as will be mine. If they aren't they will probably rub like OrangeLJs (7.5inch wide). I reckon you would keep the stock Torana offset, 19P as that will clear the shocks. Any extra width in the wheels will move outwards of the guards rather than in and solve that via flaring/rolling/pumping.

RE: the legalities. If you fit another diff or another hub for the front (like the Hoppers kit) that will allow you to have the maximum wheel/tyre sizes for that model of car that the diff/hub came off.

You will get away with 7.5 or so, but anything bigger and its pretty cop bait if your running Banjos and torana hubs. And 225s on a 9" tyre is pushing it especially if your running low profile tyres.

Edited by JBird, 28 October 2006 - 01:14 PM.

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#12 _dickiep_

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Posted 28 October 2006 - 02:26 PM

oh bugger. thats just made so many more questions. im getting the wheels made and can get custom offset etc and the gaurds are rolled out so that aint a problem. now i need to think about diff and stuff. ive got a banjo lsd (i think xu1??) which i know is a rare as rocking horse sh*t these days, i dont reckon it will last running wide tyres and some power. i was looking to do an engine conversion probably when i finish uni around 2008 (i know its along time away but its when i have money) which means new diff, gearbox, engine, brakes. i think i might put the wheels on and run it with them and cross the other worries when i get to them in a couple of years.

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#13 _dickiep_

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Posted 28 October 2006 - 03:08 PM

pics? im really keen to seen pictures of 17's on lc/j, anyone got pictures?. they will look huge especially because ive got 13" hubbies on it know! CANT WAIT!

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#14 _HB1200_

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Posted 28 October 2006 - 04:11 PM

I fitted up the some 15" rims to my brothers LC toady, the front rims are 15x6.5 @20P and the rears are 15x8 @25P. When we measured up the car these offsets would keep the car within the track width requirements. Here are some pics:

Front
Posted Image

Rear

We have not had tyres on or driven the car with these rims so we may have to adjust the guards or wheel arches but I don't think there will be a problem.

HB1200

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#15 _JBird_

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Posted 28 October 2006 - 07:19 PM

Thanks for the pics HB!!
So 25P would be probably the max for a 15...What kind of Tyres will you be running? With 17x8 will prob have to run something less.

Bad luck dickie, I am in the same boat ish. Uni holidays is coming up and working day and night to pay for the "driveline" conversion. Step 1 in legalising car for v8. Disc brakes all round etc.

Sell your Xu1 diff, it will probably pay for a commodore diff :spoton:

. BTW have you seen the bearings on a banjo? I don't know about you but I wouldn't trust 8" wide tyres on it for too long...

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#16 _dickiep_

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Posted 29 October 2006 - 12:58 AM

that hb they look really good. i have an idea what sort of offset i need. i like those wheels they kinda have a tough modern look with the bolts around the outside. i know someone in the wheels and tyre business that wil help me for sure

yeah uni suck hey. ive got a job organised for summer so hopefully earn decent money. im gonna talk to a few people bout wheels and tyres and legalities and all the boring stuff before i do anything. i havent seen the bearing but i will next weekend cause i need to change one cause its gone. what engine are you planning jbird? what wheels?

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#17 mikew

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Posted 11 November 2006 - 09:24 PM

RIM,

Sorry for late reply.. I've been lucky enough to be away on a holiday for a while....

Notice I said the widest TYRE option was 7". The new rules seem to be based on the original tyre options, not original rim width options.

If we use the new rules to the max allowable width, then a 7" original tyre means we can fit a maximum 225 tyre. And the rule states that for profiles less than 60, the widest rim allowablew is 9".

Anyway.. thanks to all who posted size and offset details.

Mike

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#18 _bushi_

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Posted 26 November 2006 - 04:12 PM

I have a LJ and I run 14x8 GTS rims, but I have shortend my diff by 1in end end.
I can run 235 but it can tend to rub somtimes on corners with retreds

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#19 _JBird_

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Posted 26 November 2006 - 04:47 PM

I have a LJ and I run 14x8 GTS rims, but I have shortend my diff by 1in end end.
I can run 235 but it can tend to rub somtimes on corners with retreds

G'Day Bushi,

Got a pic?

What offset is a GTS 14x8 Rim and also what profile is the tyre?

Cheers

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#20 _bushi_

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Posted 27 November 2006 - 11:33 AM

at the monent i have 225x60 , not sure have to measureand the offset is the same as the standard rim just extendend by 2in outwards but my diff has also come in 1in each end.

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#21 _dave720gtr_

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Posted 27 November 2006 - 12:07 PM

these are 15=7s and 205/50s no mods only rolled lips! no rubbing standed diff length
Posted Image

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#22 _JBird_

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Posted 27 November 2006 - 10:48 PM

Thanks for the pics Bushi (he sent it to my email).
I tried to resize them but they got abit strange looking. I think we have a winner though.

Shorten the diff by 1" and run GTS rim offset will fit an 8" wide rim as long as you decrease the profile as you go up in diameter size.

Thanks for the pic Dave, nice car those wheels really suit.