Is an impact too much torque?

brocklanders · 06-03-2014, 12:14 AM

I bought a cordless impact, that says 200ftlbs max. If I were to install my wheels would that be to much torque or will it be fine.

7smurfs · 06-03-2014, 12:40 AM

Over torquing could result in threading the studs and/or your lug nuts becoming loose.

I hate using the machine because it damages my lugs so I always hand torque mine

brocklanders · 06-03-2014, 12:43 AM

OK I will run them up then use my torque wrench. not a big deal I was just curious if it mattered.

TheSt|G · 06-03-2014, 06:41 AM

Proper torque always matters.

If you become accustomed to your impact gun, you can run them up 95% of the way. I have a cordless one that I used that I can always nail 60ft/lbs with. It is just a simple case of doing that last 28 ft/lbs with the torque wrench after.

MightyMouseTech · 06-03-2014, 06:56 AM

200 lb.ft is way too much! That will over stretch the bolts, putting them is plastic deformation. Over torquing the wheel nuts will damage the wheel bolts and the hubs and will cause warping of the brake rotors.

Spec is 88 lb.ft.

Just get them snug and then hand torque.

VMRWheels · 06-03-2014, 01:07 PM

Quote:

Originally Posted by MightyMouseTech

200 lb.ft is way too much! That will over stretch the bolts, putting them is plastic deformation. Over torquing the wheel nuts will damage the wheel bolts and the hubs and will cause warping of the brake rotors.

Spec is 88 lb.ft.

Just get them snug and then hand torque.

Agreed!

Honestly I wouldn't even bother using an impact gun on wheels at all, even if it's just to thread most of the bolt. It doesn't save you that much time, and you risk damaging some of your bolts or possibly the hub. I always recommend hand tightening them first, then using a torque wrench to properly torque the wheels down.

3002 tii · 06-03-2014, 01:11 PM

Quote:

Originally Posted by TheSt|G

Proper torque always matters.

If you become accustomed to your impact gun, you can run them up 95% of the way. I have a cordless one that I used that I can always nail 60ft/lbs with. It is just a simple case of doing that last 28 ft/lbs with the torque wrench after.

+1

Plus aside from over-torquing you can easily scratch your wheels if you're not careful.

MightyMouseTech · 06-03-2014, 02:01 PM

Personally I use an impact to snug up the wheels. But I use a torque limiting stick of 80 lb.ft. Put the car on the ground and final torque to 88 lb.ft.

They look like this:

MarkkyyMan · 06-11-2014, 02:59 AM

Quote:

Originally Posted by VMRWheels

Agreed!

Honestly I wouldn't even bother using an impact gun on wheels at all, even if it's just to thread most of the bolt. It doesn't save you that much time, and you risk damaging some of your bolts or possibly the hub. I always recommend hand tightening them first, then using a torque wrench to properly torque the wheels down.

+1 only way to go in my opinion.

128Convertibleguy · 06-11-2014, 07:50 AM

Quote:

Originally Posted by MarkkyyMan

+1 only way to go in my opinion.

+1

Gary@TireRack · 06-11-2014, 08:34 AM

80-88lb ft for sure.

chris82 · 06-11-2014, 11:56 AM

That's way too much. I do 88lbs with a torque wrench. I use the impact drill to loosen them, and to speed up the process of hand tightening, but I Never torque it with the impact drill. Always with a prope torque wrench.

06-03-2014, 12:14 AM	#1
brocklanders Major 105 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	Is an impact too much torque? I bought a cordless impact, that says 200ftlbs max. If I were to install my wheels would that be to much torque or will it be fine.
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06-03-2014, 12:40 AM	#2
7smurfs Captain 137 Rep 902 Posts Drives: M3 CS Join Date: Apr 2014 Location: Melbourne iTrader: (0)	Over torquing could result in threading the studs and/or your lug nuts becoming loose. I hate using the machine because it damages my lugs so I always hand torque mine
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06-03-2014, 12:43 AM	#3
brocklanders Major 105 Rep 1,428 Posts Drives: the uno, mineral white Join Date: Mar 2010 Location: houston iTrader: (3) Garage List 06 325 [0.00]	OK I will run them up then use my torque wrench. not a big deal I was just curious if it mattered.
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06-03-2014, 06:41 AM	#4
TheSt\|G Resident Tamed Racing Driver 298 Rep 4,697 Posts Drives: 911, 130is, E39 M5, E36 M3 Join Date: Mar 2008 Location: Outside Philly iTrader: (2)	Proper torque always matters. If you become accustomed to your impact gun, you can run them up 95% of the way. I have a cordless one that I used that I can always nail 60ft/lbs with. It is just a simple case of doing that last 28 ft/lbs with the torque wrench after.
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06-03-2014, 06:56 AM	#5
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	200 lb.ft is way too much! That will over stretch the bolts, putting them is plastic deformation. Over torquing the wheel nuts will damage the wheel bolts and the hubs and will cause warping of the brake rotors. Spec is 88 lb.ft. Just get them snug and then hand torque.
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06-03-2014, 02:01 PM	#8
MightyMouseTech Major General 4338 Rep 6,196 Posts Drives: 13 135i 6MT LeMans Blue MSport Join Date: Feb 2013 Location: Ottawa, Canada iTrader: (0)	Personally I use an impact to snug up the wheels. But I use a torque limiting stick of 80 lb.ft. Put the car on the ground and final torque to 88 lb.ft. They look like this:
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06-11-2014, 08:34 AM	#11
Gary@TireRack Moderator 369 Rep 4,745 Posts Drives: Formerly 1995 M3 Join Date: Oct 2006 Location: South Bend, IN, Tire Rack HQ iTrader: (2)	80-88lb ft for sure. __________________ Gary. Tire and Wheel Forum Moderator. Tire Rack Sales Rep Gary@Tirerack.com http://www.tirerack.com/a.jsp?a=AH8&url=index.jsp Please refer to 'Gary/E90 Post' as your previous contact when you order online to help support this forum.
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06-11-2014, 11:56 AM	#12
chris82 Brigadier General 827 Rep 3,856 Posts Drives: 128i Join Date: Aug 2012 Location: NY NY iTrader: (8) Garage List 2009 BMW 128i [9.80]	That's way too much. I do 88lbs with a torque wrench. I use the impact drill to loosen them, and to speed up the process of hand tightening, but I Never torque it with the impact drill. Always with a prope torque wrench.
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