Tires -- Break-in period? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**ThreeQuarter** · 11-10-2002, 10:21 PM

Can someone explain to me why load range D & E rated tires are so loose when they're new, and then firm up a few miles down the road? What exactly is going on inside the tire? Can you break them in wrong?

Thanks, Ben

*Shane* · 11-10-2002, 11:03 PM

hey blu......i have never heard of "break in" for tires......hope someone can help you out with this because this now has my curiosity up.

Gordo · 11-11-2002, 10:03 AM

That's new to me also, I think who ever told you that would try to sell you blinker fluid too.

Custom 68 · 11-11-2002, 10:35 AM

I think there is some mold release that may be what makes them feel slicker when new. I think you scrub this off pretty quick.

**ThreeQuarter** · 11-11-2002, 01:45 PM

It's a looseness in the sidewalls, I've felt it myself. It makes the truck pretty tough to keep between the stripes, because the sidewalls haven't stiffened up yet. They'll firm up within a thousand miles or so. It seems to be only a factor in load range D & E tires, of course the taller ones are more prone to it (I run 235/85/16). It's pretty much common knowledge among my friends who run HD tires. We were discussing it the other day and I thought of a great place to ask this question: HERE! So what's going on inside the tire? Thanks.

useRc10 · 11-11-2002, 01:51 PM

ahhh...blinker fluid...that actually works...me and another guy put up a sign that said 1000 blinks for a 99 cents at trak auto and actually had people ask...

mikep · 11-11-2002, 06:58 PM

My engine reaches peak torque at or around 4000 RPM. Ive found that if I reach its peak torque range and then immediately release the clutch while keeping my foot on the gas I shorten the tire break in period considerably. I try this trick every few days to assist in my tire break in . This ensures a proper tire rotation every year and a half or so ...with new tires no less.

**ThreeQuarter** · 11-11-2002, 07:20 PM

LOL I guess "loose" means different things to different people. I'm talking sidewall stiffness here. Any HD tires owners out there?

Ben

**ThreeQuarter** · 11-13-2002, 01:30 AM

ttt

Hooter · 11-13-2002, 02:15 AM

are you sure you arent just "baking the treads" too much maybe slow down around those corners too! I have felt that too with the widetrack radial baja's on my 77 silverado

**ThreeQuarter** · 11-13-2002, 02:20 AM

It's been a long time since anyone has accused me of going too fast around corners.

I can assure you that isn't the problem.

11-10-2002, 10:21 PM	#1
ThreeQuarter Senior Member Join Date: Jun 2000 Location: Texan in Iowa Posts: 2,522	Tires -- Break-in period? Can someone explain to me why load range D & E rated tires are so loose when they're new, and then firm up a few miles down the road? What exactly is going on inside the tire? Can you break them in wrong? Thanks, Ben __________________ Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3

11-11-2002, 10:03 AM	#3
Gordo Registered User Join Date: Jan 2001 Location: Killingworth, CT. USA Posts: 3,378	That's new to me also, I think who ever told you that would try to sell you blinker fluid too. __________________ 1971 C10 swb stepside 350/700R4/3.73posi (retired as of 4/22/03) 1998 S10 short bed 2002 S10 Blazer 1942 Oldsmobile 1958 Massey Harris Pony 1951 Wife Killingworth, Connecticut May those who love us, love us, any of those who do not love us, may God turn their hearts. And if God is unable to turn their hearts, may he turn their ankles so we may know them by their limping. A man who works with his hands is a laborer; a man who works with his hands and his brain is a craftsman; but a man who works with his hands and his brain and his heart is an artist.

11-11-2002, 10:35 AM	#4
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,939	I think there is some mold release that may be what makes them feel slicker when new. I think you scrub this off pretty quick. __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

11-11-2002, 01:45 PM	#5
ThreeQuarter Senior Member Join Date: Jun 2000 Location: Texan in Iowa Posts: 2,522	It's a looseness in the sidewalls, I've felt it myself. It makes the truck pretty tough to keep between the stripes, because the sidewalls haven't stiffened up yet. They'll firm up within a thousand miles or so. It seems to be only a factor in load range D & E tires, of course the taller ones are more prone to it (I run 235/85/16). It's pretty much common knowledge among my friends who run HD tires. We were discussing it the other day and I thought of a great place to ask this question: HERE! So what's going on inside the tire? Thanks. __________________ Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3

11-11-2002, 01:51 PM	#6
useRc10 Registered User Join Date: Feb 2001 Location: Mechanicsville, VA, 23111 Posts: 1,138	ahhh...blinker fluid...that actually works...me and another guy put up a sign that said 1000 blinks for a 99 cents at trak auto and actually had people ask... __________________ -'02 Chevy Avalanche, 5.3L, 4x4... needing a small lift and bigger tires -'72 Chevy C-10(350, bored 60 over)dual flowmasters, 3 on the tree -'85 K5 Blazer,305 NO MORE...350 is in,2" lift,33" Mickey Thompson Baja Claw Radials -dads '70 burb (red, 5-7 drop, 350...) www.geocities.com/userc10/truckhome.html AIM: Auntjoedadda

11-10-2002, 11:03 PM	#2
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	hey blu......i have never heard of "break in" for tires......hope someone can help you out with this because this now has my curiosity up.

11-11-2002, 06:58 PM	#7
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	My engine reaches peak torque at or around 4000 RPM. Ive found that if I reach its peak torque range and then immediately release the clutch while keeping my foot on the gas I shorten the tire break in period considerably. I try this trick every few days to assist in my tire break in . This ensures a proper tire rotation every year and a half or so ...with new tires no less. __________________ No truck :-(

11-11-2002, 07:20 PM	#8
ThreeQuarter Senior Member Join Date: Jun 2000 Location: Texan in Iowa Posts: 2,522	LOL I guess "loose" means different things to different people. I'm talking sidewall stiffness here. Any HD tires owners out there? Ben __________________ Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3

11-13-2002, 01:30 AM	#9
ThreeQuarter Senior Member Join Date: Jun 2000 Location: Texan in Iowa Posts: 2,522	ttt

11-13-2002, 02:15 AM	#10
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	are you sure you arent just "baking the treads" too much maybe slow down around those corners too! I have felt that too with the widetrack radial baja's on my 77 silverado __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

11-13-2002, 02:20 AM	#11
ThreeQuarter Senior Member Join Date: Jun 2000 Location: Texan in Iowa Posts: 2,522	It's been a long time since anyone has accused me of going too fast around corners. I can assure you that isn't the problem. __________________ Ben '68 Chevy C10 Custom LWB 327/TH400 2nd owner '16 GMC Sierra 1500 SLE Dblcab 4wd 5.3

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