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Re: R bias ply tires really that bad to drive your Mopar on
[Re: AB&E]
#881195
12/18/10 01:04 AM
12/18/10 01:04 AM
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Joined: Jan 2003
Posts: 21,555
N.E. OHIO, USA
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Quote:
i had bias reds on my 67 camaro rag drove good I have f60 poly gts on my 70 cuda drives like 
but I think thats just part of mother mopars nature the main thing is its gota look good  old mopars have never drove to well with bias or radials  
I'd have to believe that a lot of the poor handling is that most owners have never put a good set of performance shocks on their cars.....and I'm not talking a good set of standard shocks or even gas emulsion shocks like KYB's etc. I had a '72 Ford van with a set of Koni shocks on it back in the day and still had my '69 Road Runner and when I put the shocks on the van it drove way better than the rr. I'm sticking a set of Bilstein (De Carbon type with the floating separator) on the GTX and a set of bias G70's and  I'll let you know 
My '69 Road Runner back in '69 with bias plies
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: b54406barrel]
#881197
12/18/10 01:21 AM
12/18/10 01:21 AM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
master
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master
Joined: Jan 2006
Posts: 3,535
Canuckville
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Bias-ply are really not that bad to drive.
Know what to expect and drive accordingly.
For me,I love the correct look of the bias ply but prefer the handling of a radial.
My problem is I have to go to a 15 inch radial to maintain the same outer diameter of the tires.
For example,my waygun came with H78-14's.(27.6 o.d.)
Sure they are in still good shape,but I will only drive on them within city limits to local cruise nights and never on the highway.
The tallest 14 available in the broadmarket is 21575R14 which is an inch too small.(26.7)
I eneded up installing 2157515 radials just to keep the engine revs and speedometer at bay.(27.7)
Having the correct looking tires do set you apart from the crowd and is the finishing touch when showing yur car..
For daily driving,I like the radials better.
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: 68Cbarge]
#881199
12/18/10 01:36 AM
12/18/10 01:36 AM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
master
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master
Joined: Jan 2006
Posts: 3,535
Canuckville
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Last edited by 68Cbarge; 12/18/10 01:44 AM.
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: 68Cbarge]
#881200
12/18/10 01:40 AM
12/18/10 01:40 AM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
master
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master
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Canuckville
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Also here are the Tornado snow tires that were on the rear of the car until September. These things are meat grinders!!! They were also a popular tire line at Canadian tire back in the day.  
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: A12]
#881201
12/18/10 04:50 PM
12/18/10 04:50 PM
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Joined: Sep 2006
Posts: 1,139
West Tennessee
rbstroker
super stock
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super stock
Joined: Sep 2006
Posts: 1,139
West Tennessee
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my first new car was a 1965 Plymouth. Now, I know that memory is the second thing to go (I can't remember what is first), but I don't recall any of the cars that I have had, with factory installed bias ply tires, having problems staying in the center of the lane at speed. Could there be an alignment/inflation issue?
This is the land of the free
because of the brave
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: rbstroker]
#881202
12/18/10 08:03 PM
12/18/10 08:03 PM
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Joined: Jan 2006
Posts: 3,535
Canuckville
68Cbarge
master
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master
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Canuckville
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Yes,inflation is key.
An old rule of thumb still good today-when installing radials--add 6 pounds more than what the old bias call for on the placard of the driver's door jam.
Radials require more pressure compared to bias.
As mentioned somewhere in this thread,overinflating the biased tire can cause the car to be all over the road.
So,when running bias ply's,run the vehicle's factory correct pressure.
Regardless of the type of tire,do not follow the MAX PRESSURE listed on the sidewall-always follow the vehicle's requirement--not the tire specs on the sidewall.That is on there--by law-- to show its limitations..
Last edited by 68Cbarge; 12/18/10 08:12 PM.
'68 Newport Custom Barge on a Budget!! BOAB
1973 Satellite WAGON! 318- 3 on the tree!!
2008 Chrysler 300c HEMI!
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: MoparforLife]
#881204
12/18/10 09:30 PM
12/18/10 09:30 PM
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Joined: Jan 2003
Posts: 21,555
N.E. OHIO, USA
A12
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Quote:
I can't believe all the replies saying to limit your driving miles, etc, etc. We never limited our miles back in the day, they went many miles with no problems and till can. In fact very likely more miles on the bias of today than yesteryear do to improved quality of materials used. We didn't have a choice, we drove what we had available and liked it and never even thought of limiting the miles. 
 I had 80K+ miles on my Road Runner (above post) back in the day and when I first got it the speedometer needle was sticking 65 mph and I didn't know it was doing that and I drove it for miles down the PA Turnpike at 100+ according to my friend (in another '69 Road Runner btw) who gave up trying to keep up  The car was only a couple of weeks old at the time so I didn't realize how fast I really was going....I mean the speedometer read 65 mph  True story I swear!
MikeR
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Re: R bias ply tires really that bad to drive your Mopa
[Re: MoparforLife]
#881207
12/19/10 01:13 PM
12/19/10 01:13 PM
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Joined: Feb 2010
Posts: 1,645
Phila. Pa.
Mattax
top fuel
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top fuel
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
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Quote:
Another thought on it. Look at all cars running on bias ply race tires out there. Drag and circle.
Right, there's nothing inherently wrong or unsafe about bias construction. But note there's a huge variance in tire characterics even within the broad groupings of 'bias' and 'radial'. For example with road race tires, Hoosier Street TDs provide great adhesion and slow breakway but not much directional feel at the steering wheel. While the Bluestreaks are generally considered 'slower' but have better directional feel. There's many factors at play - angle of the cross-plies, sidewall, compounds and tread (if any). Grassroots Motorsports did a back to back test of vintage legal race tires a few years back, but I can confirm the Street TDs characteristics from my own experience (note: this is not a steet tire in spite of the name. do not even think of using it on the street.)
Bottom line is that yes the development of radial ply tires were a technological breakthrough, but not doesn't mean a bias construction tire is inhernently unsafe. IIRC one of the advantages of radial plies is they're slightly more efficient (if all other things were equal).
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: LimeliteAero]
#881208
12/19/10 11:56 PM
12/19/10 11:56 PM
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Joined: Jan 2003
Posts: 21,555
N.E. OHIO, USA
A12
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Quote:
you cant tell the difference between 65 and 100?
I kind of saw that one coming...I know NOW what 100 mph feels like but when you were a teen in the late '60's and up until that point your main source of transportation was a 305 Scrambler and a Triumph 500 Daytona and you took your driver's test in a friend's 4-year old '62 Chevy Impala boat and if you got lucky you got to use the only car in the family a '64 Chevy Belair Station wagon then 65 mph felt like 105 mph in or on all of those vehicles. When I got my '69 Road Runner new I ordered it with a Super Track Pack 3.91, Torqueflite, buckets, console, power steering.....and drove it locally in Southwestern Pa so I had little or no Turnpike or Interstate experience and almost got in trouble doing 10 mph or 25 mph over the local speed limits because the car was so new and had a "performance" suspension and Wide Oval Performance BIAS tires (keeping it OT ) that it just didn't feel like you were going as fast as the speedometer was (supposed to be) reading. This was my first trip DRIVING down the PA Turnpike and maybe the speedometer needle was stuck at 60-65 or almost straight up in the center before that but I never noticed it. When my buddy told me at the first service plaza (I was there so far ahead of him I was just finishing filling up) that I was going crazy fast and he backed off at 90 mph I said he was full of it until I got back in the car and there was the needle stuck around 65 mph I tapped the plexiglass with my finger and the needle dropped down to 0, I had to tap the plexiglass while driving to get it to go past 65 mph to display any higher mph and did that until I took it back to the dealer a week later to get the cover replaced.
My only experience with judging speed up to that point were with vehicles that felt like you were going twice as fast as you really were...but with a brand new Road Runner back in the day I was always going twice as fast as I THOUGHT I was and that got me into trouble a few times. Now you've never been in a performance car and didn't realize how fast you really were going until you looked at a WORKING speedometer   "Honest Officer I didn't realize how fast I was going..........."
Oh and the tough part was taking the photo not the speed .....cruising along at 100+ mph driving my '68 Road Runner out west in the middle of nowhere....but it had radials so it was "safe" not like in the old days with those unsafe BIAS ply Wide Oval Performance tires
MikeR
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: A12]
#881209
12/20/10 01:41 AM
12/20/10 01:41 AM
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Joined: Dec 2007
Posts: 587
minot north dakota
ledft79
mopar
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mopar
Joined: Dec 2007
Posts: 587
minot north dakota
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My experience with bias is that you can burn the crap out of them for months, and they're still good to go. Radials, a couple of rough nights and they're bald. Highway, and straight line driving, I pick radials. Ripping around and tearing up the highway or gravel roads, I'll take bias any day.
DRIVE EM, DONT HIDE EM.
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Re: R bias ply tires really that bad to drive your Mopar on
[Re: ledft79]
#881210
12/20/10 05:23 PM
12/20/10 05:23 PM
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Joined: Jan 2003
Posts: 17,529
Las Vegas, NV
6bblgt
I Live Here
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I Live Here
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Posts: 17,529
Las Vegas, NV
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SPEEDWAY/POLYGLAS/WIDE OVAL for the look & the experience!! STANDARD on the '69 440 GTX were "red-streak" F70-14 Goodyear SPEEDWAY (T82) nylon cord tires. ***** some Firestone "red-streak" F70-14 WIDE OVAL nylon cord tires have been found that appear to be original. OPTIONAL at NO COST were "white-streak" F70-14 Goodyear SPEEDWAY (T83) nylon cord tires. ***** some Firestone "white-streak" F70-14 WIDE OVAL nylon cord tires have been found that appear to be original. OPTIONAL at $26.45 were "red-streak" F70-14 Goodyear POLYGLAS (T85) fiberglass-belted tires. ***** Firestone did not have a fiberglass belted tire in '69. All of the currently available reproduction SPEEDWAY - WIDE OVAL - POLYGLAS tires are of fiberglass-belted construction. The Firestones use SUP-R-BELT sidewall design/molds which were an early '70s fiberglass-belted tire. I'd hazzard a guess that Firestones were sometimes used (late in the year or at certain plants) as the base tire because the availability of the Goodyears was low due to Goodyear wanting to push the "better" POLYGLAS technology or simply because of the success of Road Runner, GTX, Coronet R/T, Super Bee, & Charger R/T exceded expectations at greater that 150,000 units.
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Maybe the E,F,G,70 series tires are next 
