Wheel & Tyre combo's - Coupe - Page 14

Jallopy · 21-09-2012, 12:28 AM

Quote:

Originally Posted by Auslandau

Twas me

With 295;s on I had to take only a few mm filed from the inside of the guard. It was just the slightest amount though. Didn't need to roll them and only took a few minutes to get right.

I thought the convo pros were a 4.5 " backspace wheel in the 10x15. Not zero offset or 5" back space.

So maybe that would acount for the very minor touch.

Buildn · 21-09-2012, 08:54 PM

Quote:

Originally Posted by Auslandau

Twas me

With 295;s on I had to take only a few mm filed from the inside of the guard. It was just the slightest amount though. Didn't need to roll them and only took a few minutes to get right.

I had a set of convo pro 15x10 5 inch backspace that fit perfectly with heaps of space on both sides. I damaged them and while i waited for a replacement set i got a new diff centre and upgraded tailshaft. Once i put the new replacement 15x10 5 inch backspace set on, the tyres (same 295s that were on first set) scraped really bad on left side. I thought i had been sent the wrong offset so i measured both sets while off the car and they are identical in every way. Couldnt figure it out so took it to a suspension mob and they tweaked a few things and now they only just just fit on the left hand side, still a bit confused as to what went wrong. Any ideas?

FDCOOP · 21-10-2012, 03:44 PM

Will 17x11 with a 315 tyre fit under a coupe and no lipping or diff mods... With the correct offset and backspace off course.... Has anyone got a pic of this im just wondering how low it can go without scrubbing if at all

melon466 · 19-11-2012, 12:19 PM

Quote:

Originally Posted by FDCOOP

Will 17x11 with a 315 tyre fit under a coupe and no lipping or diff mods... With the correct offset and backspace off course.... Has anyone got a pic of this im just wondering how low it can go without scrubbing if at all

Here you go, 17 x 11, -12mm offset and 5.5 inch backspace.

Jallopy · 11-11-2012, 11:12 PM

Quote:

Originally Posted by Buildn

I had a set of convo pro 15x10 5 inch backspace that fit perfectly with heaps of space on both sides. I damaged them and while i waited for a replacement set i got a new diff centre and upgraded tailshaft. Once i put the new replacement 15x10 5 inch backspace set on, the tyres (same 295s that were on first set) scraped really bad on left side. I thought i had been sent the wrong offset so i measured both sets while off the car and they are identical in every way. Couldnt figure it out so took it to a suspension mob and they tweaked a few things and now they only just just fit on the left hand side, still a bit confused as to what went wrong. Any ideas?

When you damaged them you didnt slide out and clip the gutter by any chance

Thus pushing the diff sideways?

greenjgs · 19-11-2012, 02:51 PM

Quote:

Originally Posted by Jallopy

When you damaged them you didnt slide out and clip the gutter by any chance

Thus pushing the diff sideways?

The diff in every Hardtop I've seen sits 1/4" towards the LH side. My 15 x 10 V5's rubbed until I centred the diff correctly. Need to do the same thing on the racer.

AllCoupedUp · 10-11-2012, 12:23 AM

Does anyone have a copy of the latest Tyre & Rim Association Passenger Car Manual that they can post up?

Cheers

GTB 351 · 10-11-2012, 03:11 AM

Quote:

FDCOOP Re: Wheel & Tyre combo's - Coupe

--------------------------------------------------------------------------------
Will 17x11 with a 315 tyre fit under a coupe and no lipping or diff mods... With the correct offset and backspace off course.... Has anyone got a pic of this im just wondering how low it can go without scrubbing if at all

Here you go-

xcburger351 · 03-01-2013, 04:19 PM

Hey can anybody help .. Apparently I need an engineers certificate or get 20' on to my car with a 35mm off set ... How do I go about that???

Fish17 · 13-01-2014, 08:40 PM

Going with a proven safe combo of Performance Challengers 15x10 Rear fitted with Kuhmo 295x50x15 (676 Rolling Circumference), 15x8 Fronts fitted with Kuhmo 225x60x15 (651 Rolling Circumference) to replace the old 14x8 12 Slot Chromies fitted with 225x65x14 all round. What do you guys think? Shouldn't be any clearance issues, am I being to conservative? Will be lowering the car an inch or 2 all round before its back on the road.

[/URL]

FDCOOP · 13-01-2014, 09:47 PM

Hey fish it sure sounds fine from what I've seen around and its as you said it's a proven combo it'll all depend on you're ride height as far as scrubbing goes. I'm running a 315/30/18x10 it's what I always wanted for my coupe build..... mind you it cost me 5 grand for a full diff build but they fit under perfectly.

Bearman · 13-01-2014, 10:09 PM

Ah, the good ole Challengers. Off the shelf they have a 4.5" backspace. With 295/50x15 they will scrape standard un-lipped wheel arches, big time if lowered. You would need to lip the arches and pump them slightly.

Everyone I know that runs 295's on these rims has lipped guards, as in lipped almost flat and lifted slightly in the bum.

With 265/50x15 they'll sit nice and not scrape. I had some on mine and the only scraping I had was when fully loaded and under full suspension compression like at the bottom of a dip. I wouldn't have had a hope with 295's

Fish17 · 14-01-2014, 09:57 AM

Thanks Bearman that's good info, I thought it would have been ok, I dont want to modify the lip & SS moulding so maybe I will have to go with plan B ( a 265 tyre) or just lower the front end.

Fish17 · 14-01-2014, 04:06 PM

Bearman I will be using the existing 8" Borg Warner diff will that still mean rubbing issues if the car is fitted with 295's & lowered at the rear?

Thanks

Tha Jack · 14-01-2014, 10:00 PM

The length of the diff is still the same as a 9"

neptune blue · 15-01-2014, 12:12 AM

Quote:

Originally Posted by Tha Jack

The length of the diff is still the same as a 9"

Are they exactly the same or is there the slightest of difference

Fish17 · 24-01-2014, 12:32 AM

I have purchased my wheels 15 x 10 & 15 x 8 Performance Challengers

[/URL]

And it looks like I may have a 9" LSD disc brake rear end for it, formerly from a ZH Fairlane - is that going to be the same width as the 8" Borg Warner diff currently in the coupe?

If I run say a 265 tyre rather than 295 tyre with the 9" will I avoid the rubbing issues? What if the car is lowered (only an inch or two) with a 265 tyre, will that cause issues with rubbing?

Thanks in advance for your help/advice.

Tha Jack · 24-01-2014, 07:45 AM

If there is enough meat on them where they drilled the holes you should be able to machine the centers down a quarter inch or so. That way you will be able to run 295s.
Take it to a shop that does rim repairs and they should be able to tell you if it can be done.

greenjgs · 24-01-2014, 02:40 PM

Be careful you may still have rubbing on the Left qtr. The diff is usually offset 1/4" to the left in a falcon. Make plenty of measurements before you buy tyres. Most tyre manufacturers have tyre side wall widths when mounted on their web sites. 265 or 275 wide tyres are the safe bet if you have SS moulds

Claytopia · 09-05-2014, 06:11 PM

Hi All

I am looking at putting some 17x10's on the back of my coupe due needing larger rims to suit bigger brakes.

Could you please post pictures of your 17's and tell me what width/profile tyres you have.

Dont get me wrong I really love the way a set of 295/50x15's on a 15x10 rim
fill out the rears but I also like to be able to stop.

So any and all pics would be appreciated.

Cheers
Clayton

neptune blue · 09-05-2014, 11:50 PM

Quote:

Originally Posted by Claytopia

Hi All

I am looking at putting some 17x10's on the back of my coupe due needing larger rims to suit bigger brakes.

Could you please post pictures of your 17's and tell me what width/profile tyres you have.

Dont get me wrong I really love the way a set of 295/50x15's on a 15x10 rim
fill out the rears but I also like to be able to stop.

So any and all pics would be appreciated.

Cheers
Clayton

Check out post No 333 on this thread . That should answer your question
Cheers

DaveD_XB · 16-06-2014, 09:51 AM

Hey guy's, looking for some wheel & tire advice.. I'm looking at some 17" wheels for the Coupe & my options for the rear are 17x9.5 with 5.5" back space or a *17x10.5 with 6" back space does anyone know if either will fit? I've seen a post on here with someone who had 10.5" wheels but the back space was only 5" from memory..

Claytopia · 20-06-2014, 12:57 PM

Quote:

Originally Posted by DaveD_XB

Hey guy's, looking for some wheel & tire advice.. I'm looking at some 17" wheels for the Coupe & my options for the rear are 17x9.5 with 5.5" back space or a *17x10.5 with 6" back space does anyone know if either will fit? I've seen a post on here with someone who had 10.5" wheels but the back space was only 5" from memory..

Hi

Not sure about 10.5's but most of the guys with 10 inch wide have a 5 inch backspace. That is allowing for the standard diff and not rolling the guard lips.

I am considering a set of 17 x 10.5's also but I am at least a year away, Can you please let me know how you go.

GTB 351 · 20-06-2014, 04:50 PM

you may need to use spacers with those backspaces.

Claytopia · 20-06-2014, 05:41 PM

Quote:

Originally Posted by GTB 351

you may need to use spacers with those backspaces.

What do you run on yours?

Maybe my terms are incorrect, Zero off set?

DaveD_XB · 20-06-2014, 06:52 PM

Yeah, I'm not sure... But I'm deleting the rear springs & installing a multi link coil over setup in the rear.. So I may have room...

The wheels are ordered now, so I'll find out & let you all know.. Also I'll be fitting fully floating axles to the rear, so if needed, I could look at altering the diff length rather than use spacers.. Stay tuned to my build thread for all these answers & more

Claytopia · 20-06-2014, 07:32 PM

Quote:

Originally Posted by DaveD_XB

Yeah, I'm not sure... But I'm deleting the rear springs & installing a multi link coil over setup in the rear.. So I may have room...

The wheels are ordered now, so I'll find out & let you all know.. Also I'll be fitting fully floating axles to the rear, so if needed, I could look at altering the diff length rather than use spacers.. Stay tuned to my build thread for all these answers & more

May I ask what made you decide to go for full floaters?

I would have like to go that way but its just not in the budget.

DaveD_XB · 20-06-2014, 08:26 PM

Quote:

Originally Posted by Claytopia

May I ask what made you decide to go for full floaters?

I would have like to go that way but its just not in the budget.

700HP engine & 10.5" rims with big tires will put a lot of stress on the axles, just looking for strength really

GTB 351 · 23-06-2014, 02:13 AM

Hi Claytopia, My comment referred to the post above yours by DaveD XB. Yes, a 5 inch backspace is ideal on a coupe with 10 inch rims and std width diff.
I'm running 17x10.5 inches at the rear with leaf springs, 315/35 tyres and have heaps of room inside and out. My diff is a bit narrower than std because American Racing bought out Coddington and effed up my order even after I confirmed measurements 4 times. After grenading my original diff at Heathcote a bit over 3 years ago I went 35 spline and full floater which in this state [SA] means I can get my car engineered with rims wider than 10 inch. I will be putting 335/35/17 tyres on my car when it gets back on the road next year and don't envisage having any clearance issues.

Claytopia · 23-06-2014, 11:25 AM

Quote:

Originally Posted by GTB 351

Hi Claytopia, My comment referred to the post above yours by DaveD XB. Yes, a 5 inch backspace is ideal on a coupe with 10 inch rims and std width diff.
I'm running 17x10.5 inches at the rear with leaf springs, 315/35 tyres and have heaps of room inside and out. My diff is a bit narrower than std because American Racing bought out Coddington and effed up my order even after I confirmed measurements 4 times. After grenading my original diff at Heathcote a bit over 3 years ago I went 35 spline and full floater which in this state [SA] means I can get my car engineered with rims wider than 10 inch. I will be putting 335/35/17 tyres on my car when it gets back on the road next year and don't envisage having any clearance issues.

HI GTB 351, ahhh no worries. So what backspacing do you have on the 10.5's?