Racing Wheels Q's?

[KillJoy]

Will these work on Stock Rear Brakes?

Diameter & Width: 15 x 8 "
Bolts & Bolt Circle: 5-4.5"
Back Spacing: 4.5"


KillJoy

[magindat]

Will these work on Stock Rear Brakes?

Diameter & Width: 15 x 8 "
Bolts & Bolt Circle: 5-4.5"
Back Spacing: 4.5"


KillJoy

Thought I'd heard 16 was min. to clear the caliper.

They'll stick out 2" from stock.

[KillJoy]

Ok.... how about these then?

Diameter & Width: 15 x 8 "
Bolts & Bolt Circle: 5-4.5"
Back Spacing: 5.5"

How far will they stick out?

KillJoy

[magindat]

Stock is 6.5.

6.5-4.5= face moves out 2"

6.5-5.5= face moves out 1"

[KillJoy]

I would like to try and use a 15" wheels, since there are a LOT more tire choices....

KillJoy

[O's Fan Rich]

I would like to try and use a 15" wheels, since there are a LOT more tire choices....

KillJoy

Steve,
I have a set of 05 up Mustang 17x9s with M&H DR's that are 28 inches tall.
They worked well, even with my bad driving.....

I'm sorry Steve, I was thinking wrong.... They are 17x9's with the M&H DR's.
http://www.americanmuscle.com/bl20mubuwh1.html
http://www.mandhtires.com/store.php?crn=70&rn=294&action=show_detail

[jdando]

Steve;

wouldn't a wider wheel be a better choice? How wide a tire can you get on a 8" wheel?

[KillJoy]

Steve;

wouldn't a wider wheel be a better choice? How wide a tire can you get on a 8" wheel?


I have a 295/45 on a Stock MM Wheel now :D

KillJoy

[DOOM]

I have a 295/45 on a Stock MM Wheel now :D

KillJoy

And they look damn good too! :coolman:

[KillJoy]

And they look damn good too! :coolman:


Why....THANK YOU!

:D

KillJoy

[larryo340]

I think on the rear you can get away with 15" rims which should clear the brakes, but not on the front 16" minimum.

[red]

I think on the rear you can get away with 15" rims which should clear the brakes, but not on the front 16" minimum.

That's incorrect. Most 15" racing rims will NOT fit on the rears of our car. Reason being is that the drop well is typically placed on the inner rim, reducing the caliper clearance. However, if you go with custom rims, such as Bogarts, the well is moved outward and will allow a 15" to [barely] clear.

Here's a picture of a failed attempt at getting a 15" Weld Draglite to fit. The drop well prevented it from seating.

http://www.mercurymarauder.net/showcase/files/4/2/7/5/15_inch_rim.jpg


I would like to try and use a 15" wheels, since there are a LOT more tire choices....

I understand, and so would I. Unfortunately, I wasn't willing to go with custom rims and did not find any off-the-shelf 15" racing rims with a favorable placement of the drop well and the offsets I needed. 16" doesn't have nearly as many radial options as 15". However, 17" has lots since it is a common Mustang and Camaro wheel diameter (particularly, there are a lot of 275/40R17 radials, which require at least a 9" wide rim). To keep our ABS/TC happy, I went with 245/40R17 in the front, and there have been NO problems whatsoever. More details can be found here (http://www.mercurymarauder.net/forums/showthread.php?t=42998).

[red]

Also, Greg Weld is releasing nice 17" racing rims that will match our cars well. They're the DragStars (http://www.gregweld.com/brands/styles/?bid=2&id=6) (yes, I know... a rip-off of the ProStar name, which is why he's getting sued). The combination I hope to eventually go with is:

Rear:
Part: 92-795353
Size: 17" x 9.5"
Offset: 44mm (has .5" less clearance inner, 1 inch less clearance outer)

Front:
Part: 92-780350
Size: 17" x 8"
Offset: 25mm (has 1" more clearance inner, 1 inch less clearance outer)

The fronts aren't ideal offsets, but will work. The rears are great considering where it places the additional width relative to stock. They should be shipping again soon, and summit carries them cheap! (<$200 each)

[red]

http://www.mercurymarauder.net/forums/showthread.php?p=603726

[merc]

I have a 295/45 on a Stock MM Wheel now :D

KillJoy

Ray Charles had a drivers license and car, but driving was not a good idea. Putting 295/45/18 tires on stock mm wheel is not suggested. It's your ride and your risk. You can find a good select of tires for 16'' wheels. If you want to use 15' wheels the backspace is 6.5 and you will need to shave down the rear brake caliper. Martyo uses 15' wheels but he has Wilwood rear brakes. If you have the cash everything can be resolved.

[larryo340]

That's incorrect. Most 15" racing rims will NOT fit on the rears of our car. Reason being is that the drop well is typically placed on the inner rim, reducing the caliper clearance. However, if you go with custom rims, such as Bogarts, the well is moved outward and will allow a 15" to [barely] clear.

When you say "drop well" do you mean backspacing or rear spacing?
I've been around for awhile and never heard of "drop well". It seems that with the correct offset the 15" should fit without problem.


https://www.rsracing.com/images/tech-wheelterms.gif

[red]

When you say "drop well" do you mean backspacing or rear spacing?
I've been around for awhile and never heard of "drop well". It seems that with the correct offset the 15" should fit without problem.
I did not mean to say backspacing (or rear spacing for that matter). "Drop well" is a term used to describe the dip in the rim used for mounting a tire (see here (http://www.diamondracingwheels.com/basic.htm), here (http://www.lakeshorewheelandtire.com/glossary.shtml), here (http://www.mickeythompsontires.com/tech.php?bulletin=t2), etc.) and is often the lowest spot on the inner rim of a large positive offset wheel and therefore the most likely to cause clearance issues. With a small enough backspace, the drop well of any 15" wheel could clear the caliper, though your centerline would be extended unwisely outward.

[larryo340]

I did not mean to say backspacing (or rear spacing for that matter). "Drop well" is a term used to describe the dip in the rim used for mounting a tire (see here (http://www.diamondracingwheels.com/basic.htm), here (http://www.lakeshorewheelandtire.com/glossary.shtml), here (http://www.mickeythompsontires.com/tech.php?bulletin=t2), etc.) and is often the lowest spot on the inner rim of a large positive offset wheel and therefore the most likely to cause clearance issues. With a small enough backspace, the drop well of any 15" wheel could clear the caliper, though your centerline would be extended unwisely outward.

Like they say, you learn somethin' new every day. So for me today, that somethin' is the term drop well.
:beer:

[red]

Like they say, you learn somethin' new every day. So for me today, that somethin' is the term drop well.
:beer:
;) Glad to help.

[KillJoy]

Ray Charles had a drivers license and car, but driving was not a good idea. Putting 295/45/18 tires on stock mm wheel is not suggested.


MANY here are running this combination.

If you like analogies, the Speed Limit is only 65 (70 someplaces).

;)

KillJoy

[magindat]

Like they say, you learn somethin' new every day. So for me today, that somethin' is the term drop well.
:beer:

A 15" rim is 15 at the lip, but 13-14 at the drop well depending on manufacturer.

[merc]

MANY here are running this combination.

If you like analogies, the Speed Limit is only 65 (70 someplaces).

;)

KillJoy

I have seen 305's on factory wheels also. It's your life and your car, stay safe.

[Motorhead350]

Steve, I tried putting on 15s on the rear when I was a teenager, they do not fit unless you modify the rear brakes like stated before. The brakes are too big for the rim.

Bottom line, I tried it, it will not fit.