Anyone here run coker biasply tires? If so what speeds have you taken them up to and how did they handle? I wanted to go with 670x15 bfg blackwall repop corvette tires along with the slicks but when i emailed coker they said they are only rated at 116 mph but i find that hard to belive when the corvettes were taken up to 160 and most cars of that time were runnng 120 mph on bias ply. But if anyone knows of a early to mid 1960`s bfg biasply that is rated up to atleast 170 mph let me know (1963-1965 biasply tires only)
Could it be that the speed rating is for continuous high speed driving, and you're drag racing? If so, I wouldn't worry about the speed rating, the tires won't be at speed long enough to get hot and come unglued....
well if its for 112-116 mph top and the car as of now can run 130 topend im going to take her up to that, not on the strip but on the street every now and then. but if i go with the overdrive it will boost topend up to 170-180 mph. thats why im wondering if they would handle going that fast. cause im going with biasply up on the front and old radir classic repop slicks out back. i know they can handle that. but i dont think she would look good with piecrust slicks out back and non piecrust tires up front.
Just remember that years ago there were no speed ratings...this stuff all came in the 70's and 80's...you just drove the damn car without ANY consideration for speed ratings (cuz we didn't know better). The speed rating has to do with how well the tire stays round at high speeds....tires explode when they loose their shape. I recently read an article regarding large truck tires and was surprised to learn that the HIGHEST rating is safe for 75 MPH of continuous driving 'cuz they start to "egg shape' above those speeds...some tires don't even make the 75 MPH standard.
I wouldn't worry about 170 or 180...an overdrive isn't going to find you another 50 mph. Another 400 hp might. And I wouldn't run a bias ply at that kind of speed anyway, I know how squirly mine are at 130.
hp is in the neighborhood of 500-520 hp @ 7000 rpm, the engine dosent come to life and create power till 4,000 rpm thats when the cam kicks in and comes to life and when the secondaires open up. plus with the overdrive im going with it will drop the rearend down to like a 3.30:1 rearend and i will be hitting 103.55 mph @ 4000 rpm, by time the engine is wound up to 7,000 rpm she should be running 181.22 mph that is with a .75:1 overdrive engaged. The power is there, and the rearend helps it out along more. I dont plan on taking her past 160 mph but all i want to know is if the biasply can handle up to 180 or atleast 160 mph.
mmmmmmmm-k put down the calculator and come back to the real world, ever think about aerodynamics? i got a 100.00 bill says it wouldnt do 145mph.
If it's on bias plies, you could add at least one zero. Bias plies are kinda old school cool, but being dead from over-coolness just ain't cool. If you're gonna think about running those kinda high speeds, why in the hell would you want to do it on tyres built by a restorer-type that has no clue about high-performance?? A death wish?? Besides, radials pre-date the era of your car anyway. Cosmo
okkkk so the car ran 120 mph stock, used the calculator on it and it said at the rpm i was at speed was 126.73 mph. a difference of about 7 mph. Yes i know the calculators are basing it off if it was a perfect world. but i know for a fact stock she would run 130 mph topend redlineing the engine, and im sure she will atleast get up to 150 mph after i put the od on the transmission. plus what is wrong with gettign a tire rated up to a perfect world top end speed anyways.
No. just the fact that the slicks im going with are biasply style slicks and i have to run biasply if i run them. im kinda stuck with running them, unless they make a 10" wide, 29 3/4" tall bfg along with a 4.5" wide, 27 1/4" tall bfg radial ta then i would run them but from what i know from the seraching i did is that bfg dont have a radial ta that is 29 3/4" dia that will fit a 15 inch rim. Plus i woudlnt want to take the chance of the steel belt flying to pieces and damaging or destroying the work i did on the fender restoration. By the way radials werent out in 1963. biasply tires were still out. radials werent coming out till 1964/65 1963 still had biasply tires. they were 4 ply nylon or 4 ply rayon.
I'll just add to this silliness by asking, HAVE YOU EVER DRIVEN A CAR AT 150 MPH? Also what kind of car did you do it in? Your talking like it's just a matter of pushing down the accelerator until you reach 180. I can assure you nothing could be further from the truth. And if you ever do go that fast you'll want the highest speed rated tires you can buy, NOT BIAS PLYS. Frank
OK, I'lll chime in just out of safteys sake. I've driven a car at 180+ and can tell you shit gets real sketchy real quick. and when you start to feel the effects of aero dynamics on you'r car at that speed and the semi-wieghtlesness of you'r front end...welll you'll want the best damn tires on there money can buy...period, even if it does feel like they aint touching the ground
Although it is a different car, and different tire size, my old model A sedan was a handful when it was around 100 mph. So I would say go with speed rated radials.
I'm interested in the motor with the HP "in the neighborhood of 500-520." Is this another calculation, or do you have a dyno sheet? How about some specs and Pics? Thanks in advance... Mutt
If you reduce this thread to its basic question.... You are asking if there are speed-rated bias ply tires that would allow you to (conceivably) reach speeds in excess of 170 mph. Your goal is to run bias ply front tires and pie crust cheater slicks, so that you can achieve the velocity goal.... ...looking properly "nostalgic"!? Assuming that such a tires exists, who do you expect your audience to be at 170mph? And, at 170 mph, isn't safety more important that audience approval? Sorry, but this the the quintessential "form over function" equation, where safety is compromised in the interests of looks. More to the point, lets say the original car was rated to run in excess of 120 or so, The real question is...how many of the cars that ever tried that survived the ordeal?
No one will see them at speed. Think of the other driver, if you wish to run the triple didgit's on the public road's. And the EMT's.
Until about 8 years ago the standard for Winston Cup cars was bias ply tires....also the Goodyear Bonneville tires that run over 200 MPH are bias ply...specially built, yes...but still bias ply. Mickey Thompson went 406.6 MPH on bias ply tires...
Is this the 180 mph beast? I'd love to see the suprised look on the faces of Lamborghini and Ferrari drivers when you blow by 'em in this! I don't mean to poke fun...but you've made it to easy.
just being nosey, where exactly do you plan to go this fast at ? unless you own a long flat smoot section of interstate or plan on going to bonniville you may as well forget going past 140 on the streets. unless you know alot of super friendly cops
first off appearances can be deciving. just cause a car looks slow dosent mean it is. plus i had the car up to 127 mph on stock style biasply tires and it wasnt too bad. did wander alittle bit but nothing that couldnt be handled but i havent had the chance after i rebuild the frontend. Plus cars not designed to run radial tires so that will cause a different running radials on a biasply setup. Plus its a race car, engine is race preped, transmission and rearend is also. execpt rearend has the same ratio that came from the factory, plus i would post a picture of the engine but then people would see it. im the only one that see the engine bascily. Secondly im moving out to basicly the middle of no wheres, country roads. long straight stretches of runs and not only that but in the town im moving to the closest copstation is 30 miles to the south in the city. so by time they could get out to where im at i could slow down or be back at the house.
Mutt no not a estimate, the estimate i had was about 300-350 hp, Dyno i had done at a chassie dyno shop out of three runs they pulled it ranged from 500-520 hp. thats why i said in the neighborhood of.
Good Luck!? When you attempt to make your 170 mph, country road pass, on Coker bias-plys, make sure that you have notified your next of kin before hand.
Oh so i guess all the guys with tri fives running 170-190 in the 1/4 mile are apparently liers as you are implining that i am. yea sure. belive what you want. i came here for information not to prove a damn thing to anyone.
Unless i didnt state before or people havent read i dont plan on going more than 150 on the road if that. The 160-190 would be on the strip only. theres a guy down here that has a 49 ford coupe and hes running biasply tires and hes been running 140 to 150 mph on the same roads that i plan on driving the car on. plus 0 to 100 mph in 6.47 seconds means that i wont keep her up to speed that long anyways.
So you have a mystery motor, that no one but you is allowed to see, in a race car? I suppose it would do no good to ask if it's a big block or a small block, since my previous request for specs was ignored? And you aren't going to share the specs because that would give a mental picture of what it could possibly look like, right? What color is the block? If it's a race car, how are you going to pass tech inspection if they can't look at it? If you only drive it (you aren't racing unless you're in a contest of speed) out in the boonies, are you going to have people blindfolded, and bussed in so they can see you speed past at 180 mph in the middle of the night? This all sounds very mysterious, and raises SO many questions. Who are you, really??? Inquiring minds want to know..... Mutt
ok apparently you didnt read what i said. im running biasply all around when i did those test results. i have radials on her now just till i get the car finished.
God help the poor souls out cruising the countrysides & relaxing while you're driving stupid-assed speeds on public roads. And don't give us the "I'll be keeping a lookout for oncoming traffic". At the speeds you're claiming to want to run, you'd better damned well be Anakin Skywalker if you think you have it under control.
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