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#61 | |||
Clevo Mafia Inc.
![]() Join Date: Dec 2004
Location: Melbourne
Posts: 10,496
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Quote:
How wide are you going, i have seen 325 on 18" Simmonds under a stock XA coupe. Shortening the diff does not give more room between the spring and guard. |
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#62 | |||
Weezland
Join Date: Aug 2005
Location: Sydney,workshop mod
Posts: 7,216
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#63 | ||
hotshot
Join Date: Nov 2008
Location: Sadelaide
Posts: 1,757
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you should'nt have any troubles at all, i run 295's with a rolled lip and still have a half inch to play with plus the extra half inch you'll score from shortening to an XY. you'll be able to go for pro street look with out tubbing. depends on your taste. i love the look of big baggy tyres under the guards.
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Try Total Performance for a change!! Ford. |
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#64 | ||
Legend!!!
Join Date: Jun 2007
Posts: 907
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I was thinking a 12"wide rim with 305 tyres? Im not sure what sizes are available in 17 & 18s?
I want to keep the 15 x 10 Flame mags and fit racing rubber for club track days and driving events. I find they rub on the guards with 295 TAs, hence why Im getting the Diff shortened. |
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#65 | |||
Legend!!!
Join Date: Jun 2007
Posts: 907
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#66 | |||
Moderator Ford Coupe Club
Join Date: Dec 2004
Location: Vic
Posts: 3,905
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Quote:
__________________
Mitsubishi ASX Auto, White - Daily Commuter XC Fairmont Coupe, 351 4spd, Graphite Grey - The Antidote http://www.fordcoupeclub.org "If you don't know where you're going, any road will take you there" George Harrison 2001. |
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#67 | ||
COUPE WHORE
Join Date: Nov 2007
Location: were ever i pass out
Posts: 2,489
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howdy gents ,got a question ,got some kick **** 15x10 splats ,coulndt get 15x11 rims ,with a 5/half inch back space ,nth tce tyrs over here have go michilin tyres 335 x15 bit wide for my rims but they will fit :evil3: i think there profile is 335x30x15 so lower thay the normal 295x50x15 yokohamas.
any one fitted them to a un tubed coupe?reckon they will fit ? cheers pat
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Rides 1974 Malvern Star Dragstar pushbike mods; bald back tyre, big sissy bar, speckled paint job and buckled front wheel |
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#68 | ||
FF.Com.Au Hardcore
Join Date: May 2005
Location: In my shed
Posts: 5,066
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They may fit but the ride will be soooo rough with that profile.
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#69 | |||
Clevo Mafia Inc.
![]() Join Date: Dec 2004
Location: Melbourne
Posts: 10,496
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Quote:
So you would rather upset the handling by shortening the diff instead of buying the correct 5" back space rim ? |
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#70 | |||
COUPE WHORE
Join Date: Nov 2007
Location: were ever i pass out
Posts: 2,489
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Quote:
pink bits ,not to worried bout the ride just want massive rubber :evil3:
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Rides 1974 Malvern Star Dragstar pushbike mods; bald back tyre, big sissy bar, speckled paint job and buckled front wheel |
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#71 | |||
Legend!!!
Join Date: Jun 2007
Posts: 907
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Quote:
The way I see it, It will enable wider wheels to be fitted with out rubbing thus improving the handling and safety. Cheers Jack |
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#72 | |||
Clevo Mafia Inc.
![]() Join Date: Dec 2004
Location: Melbourne
Posts: 10,496
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Quote:
It cannot, that's a fact. |
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#73 | |||
moderator ford coupe club
Join Date: Jun 2007
Posts: 6,640
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Quote:
it would seem to me that you could get the same type of effect by getting a larger backspace. it would probably work out cheaper and easier, especially if the wheels you choose are made to order as nick has suggested the spring will still be in the same position in relation to the body, so altering the back space would seem to be the easier option |
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#74 | ||||
Legend!!!
Join Date: Jun 2007
Posts: 907
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#75 | ||
335 - STILL THE BOSS ...
Join Date: Dec 2004
Location: Melb East
Posts: 11,421
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Yes it will make more room between drum and guard by having the shorter diff. But ride will be bad ..... they have a good wide track and was changed from XY for this reason.
It wont allow you to have a wider tyre because the space between the springs and guard will still be the same. Thats where the correct spacing comes into it. For all the dramas of getting diffs changed, the correct offset will give you big width tyres with a very deep dish ..... and far better just to give the guards a bit of a roll. I have 295 with a 5 inch offset ...... got to 5.5 and theres the extra width ..... plus a rolled guard for a bit more. | [/url] |
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'73 Landau - 10.82 @ 131mph '11 FG GT335 - 12.43 @ 116mph '95 XG ute - 3 minutes, 21.14 @ 64mph 101,436 MEMBERS ......... 101,436 OPINIONS ..... What could possibly go wrong! Clevo Mafia [SIGPIC][/SIGPIC] |
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#76 | ||
I am Groot
![]() Join Date: Dec 2007
Location: Burnett Heads, Qld
Posts: 6,840
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Hi, i am looking at getting a qoute on a set of Torq-Thrust 11 wheels for the XA Coupe, at the moment i dont have the car with me so can someone help me with the bolt circle size.
Cheers John
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.. ![]() ![]() ![]() ![]() "Those were the days when the cars were cars, they weren't built out of an Ikea pack like they are now and clothed in plastic; they were real cars." John Bowe |
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#77 | ||
COUPE WHORE
Join Date: Nov 2007
Location: were ever i pass out
Posts: 2,489
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gday guys thought this info might be of some help for the back space questions
![]() i got some 14x8 splats and changed the rims to 15x10 ,i put a 5and a half inch back space on them as 5inch seems a little close the the gard(out side) heres some pics of room left ![]() bit closer to the leaf springs ![]() ![]() ![]() i reckon if i done it again 5and a quarter back space would be the best tyres are 295 ,but jesus i dont know how every one else is finding it but tyres in 15inch are getting harder to come buy ,tried to fit a set of 325 race track tyres whoo hooo they looked awson but just didnt fit ![]()
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Rides 1974 Malvern Star Dragstar pushbike mods; bald back tyre, big sissy bar, speckled paint job and buckled front wheel |
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#78 | ||
Moderator Ford Coupe Club
Join Date: Dec 2004
Location: Vic
Posts: 3,905
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Hi Pat, great pics and good info!! Thanks heaps for that. Those clearances look good, looks like you could drop the bum a little and have no outer sidewall scraping. Is there any inner sidewall scraping going around corners etc?? Just thinking about lateral sidewall flex.
Is that XB another one of your fleet??' Cheers, Craig.
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Mitsubishi ASX Auto, White - Daily Commuter XC Fairmont Coupe, 351 4spd, Graphite Grey - The Antidote http://www.fordcoupeclub.org "If you don't know where you're going, any road will take you there" George Harrison 2001. |
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#79 | |||
COUPE WHORE
Join Date: Nov 2007
Location: were ever i pass out
Posts: 2,489
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Quote:
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Rides 1974 Malvern Star Dragstar pushbike mods; bald back tyre, big sissy bar, speckled paint job and buckled front wheel |
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#80 | ||
Starter Motor
Join Date: Jan 2007
Location: ADELAIDE
Posts: 21
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Ive had My wheels on a few coupes over the years and cant believe how much difference there is in the set ups and tolerances although they were bought for the Landau. They were originally off a 76 anniversary corvette and were redrilled to ford pattern. they are 15 X 8.5 front and 15 x 10 rear and I'm not sure of offset.
![]() On an XB I used to own with 295x60x15 rear and 245x60x15 front ![]() On my second Landau with 275x60x15 rear (295's rubbed on cornering) and 235x50x15 front 245'sx60's rubbed on firewall. ![]() And finally the wheels back on the car they were bought for you can see on the side wall where the tyre (still the 275x60x15) had been hitting on the guard on the brown Landau and yet there is plenty of space under the guards on this one |
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#81 | |||
I am Groot
![]() Join Date: Dec 2007
Location: Burnett Heads, Qld
Posts: 6,840
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Quote:
![]() ....or is that just the photo....
__________________
.. ![]() ![]() ![]() ![]() "Those were the days when the cars were cars, they weren't built out of an Ikea pack like they are now and clothed in plastic; they were real cars." John Bowe |
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#82 | ||
FF.Com.Au Hardcore
Join Date: Mar 2008
Location: Melbourne
Posts: 10,838
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The XB GT coupe at GT Ford Performance has 335s on the rear
Should have taken a shot but was with teh owner of the shop and felt a little weird ! |
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#83 | |||
Starter Motor
Join Date: Jan 2007
Location: ADELAIDE
Posts: 21
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Quote:
Mike |
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#84 | ||
Starter Motor
Join Date: Jan 2009
Posts: 4
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I am running 245/50x15s on 15x8's up front and 305/50x15's on 15x10's out the back. All the wheel arches have been rolled and there is no concerns with rubbing the tyres.
My question (if anyone can help) is what is required to legally run 10" rims on the back in VIC. Do I need an engineers cert? The car runs a 351/FMX/9"disc combo and I have been told that the disc 9" is more than adequate to cope with the extra stress of the wide rims. Any engineers out there care to weigh in? |
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#85 | ||
Legend!!!
Join Date: Jun 2007
Posts: 907
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What brand tyres are you running? Can you post up some pics?
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#86 | |||
Starter Motor
Join Date: Jan 2007
Location: ADELAIDE
Posts: 21
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Quote:
Mike |
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#87 | ||
335 - STILL THE BOSS ...
Join Date: Dec 2004
Location: Melb East
Posts: 11,421
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I am under the impression that 10 is illegal but is still accepted? I havn't heard of anyone being done for wide tyres on a coupe and many run with at least 295's
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__________________
'73 Landau - 10.82 @ 131mph '11 FG GT335 - 12.43 @ 116mph '95 XG ute - 3 minutes, 21.14 @ 64mph 101,436 MEMBERS ......... 101,436 OPINIONS ..... What could possibly go wrong! Clevo Mafia [SIGPIC][/SIGPIC] |
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#88 | ||
Regular Member
Join Date: Mar 2007
Location: Melbourne
Posts: 135
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I asked the same question of an engineer a while ago & he told me that for him to cert them I'd have to have a fully floating axel set-up (so if an axel stub broke the axel would be held within the diff housing) & that I'd have to have at least 31 spline axels.... pref 35 spline..... they are just scared of an axel snapping & you rolling your beast into a nuns & orphans roadside picnic
Most people including the police & shannon's turn a blind eye to this... but I did also ask a guy at shannon's once & he reckoned that if I had an accident & they could prove that the wide tires where a factor then my insurance would be null & void..... Dave. |
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#89 | |||
Leftyos
Join Date: Nov 2007
Location: North Coast
Posts: 415
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Quote:
![]() I know in NSW that regardless of any engineering to a vehicle, the widest a wheel and tyre combo the rta will allow is 10 rear and 8 front. Unless they came out of the factory with bigger (like lambos and porches). You are able to legally go 2 inches (NSW) bigger than OEM on the diff the vehicle came from (doesn't matter what it is in) ie 8 inch wheels on the nine inch as mentioned above would permit fitment of 10 inch wheel but the engineer would still need to verify this. It is generally prescribed that you should upgrade wheel bearings to cope with the added stress. Also deep dish rims with too much negative off set are frowned upon (apparently by the engineer i have spoken to) as they impart greater stress on bearings and axles. Each engineer you speak to will no doubt have a different interpretation so shop around for opinions and be confident in your advice before embarking upon any mods
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Fat *** coupe lover |
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#90 | ||
the money box
Join Date: Apr 2008
Location: blacktown
Posts: 417
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in nsw you are only permitted to go 1in over factory specs so if came out with 7s you can only go 8s but if you change your rear axle assembly you must comply to the specs to which it came out of and therefor must be engineered as it's been modified.so the trick is [this is what i did] f100s came out with 9'' diff 31 spline axles and 9'' wheels so 1inch over means i can have 10s as diff housings are the same and i have 31 spline axles and bearings to suit no ones to say it's not a f100 i could have changed the brakes to disc as they are factory and a upgrade from f100 drum engineer was happy as and even engineerd with 295/50/15
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