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Drag radials rear with bias sportsman fronts? #3016432
02/18/22 01:35 AM
02/18/22 01:35 AM
Joined: Jan 2003
Posts: 10,765
Central Valley, CA.
Quicksilver440 Offline OP
I Live Here
Quicksilver440  Offline OP
I Live Here

Joined: Jan 2003
Posts: 10,765
Central Valley, CA.
I have Bias MT sportsman front runners and worn out MT ET Street bias rears…want to try drag radials but can I keep bias ply fronts? This is for racing….I actually ran radial rear street tires on the street and haven’t had a problem…but I’m not going 120 either…lol.

I can’t really find many radial front skinny’s…

Last edited by Quicksilver440; 02/18/22 01:37 AM.
Re: Drag radials rear with bias sportsman fronts? [Re: Quicksilver440] #3016435
02/18/22 02:36 AM
02/18/22 02:36 AM
Joined: Aug 2003
Posts: 39,637
Bend,OR USA
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Cab_Burge Offline
I Win
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Joined: Aug 2003
Posts: 39,637
Bend,OR USA
I ran them on my old pump gas Duster both ways, bias on front with radial rears and then radial on front with bias rears with no issues going 134. + MPH in the 1/4 mile up
I ran 165sr15 (VW tires) on the front with M/T 10.5x31x15 on the rear and Moroso 6.00 15 front drag tires with 315x60x15 M/T ET Street Radials on the rear more than once: up:


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Drag radials rear with bias sportsman fronts? [Re: Quicksilver440] #3016436
02/18/22 03:06 AM
02/18/22 03:06 AM
Joined: Dec 2018
Posts: 49
Northern Bavaria / Germany
MichaelF Offline
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MichaelF  Offline
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Northern Bavaria / Germany
did it one and the other way....no problem at all.

Michael

Re: Drag radials rear with bias sportsman fronts? [Re: Quicksilver440] #3016444
02/18/22 08:15 AM
02/18/22 08:15 AM
Joined: Jan 2006
Posts: 166
Indianapolis Indiana
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Jamie340 Offline
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Jamie340  Offline
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Posts: 166
Indianapolis Indiana
I have run that combination on my stocker for years, not a problem.

Re: Drag radials rear with bias sportsman fronts? [Re: Jamie340] #3016446
02/18/22 08:23 AM
02/18/22 08:23 AM
Joined: Jan 2003
Posts: 2,603
A shed in England
Tig Offline
master
Tig  Offline
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Joined: Jan 2003
Posts: 2,603
A shed in England
Never an Issue here either up


'74 Challenger..9.46 and 145.9 so far. 4023lb!!!# N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @142.4 with our old mule 580 wedge
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: Drag radials rear with bias sportsman fronts? [Re: Quicksilver440] #3016460
02/18/22 10:04 AM
02/18/22 10:04 AM
Joined: Nov 2009
Posts: 141
WI
mopar873 Offline
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mopar873  Offline
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Posts: 141
WI
I had a situation where I had the radial sportsman pro front skinnies on to match the radial rears and the sidewall just looked flat out soft. Always had a big bulge to it. I changed to the stiff sidewall bias ply sportsman fronts and kept the radial rears and I could tell zero difference in how the car handled speed at the track.

Re: Drag radials rear with bias sportsman fronts? [Re: mopar873] #3016510
02/18/22 12:28 PM
02/18/22 12:28 PM
Joined: Dec 2005
Posts: 8,962
Fulton County, PA
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CMcAllister Offline
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Fulton County, PA
Most Stockers and Super Stockers are running radials. I don't know any who are using radials on the front. I wouldn't know where to even buy a radial front runner drag tire.


If the results don't match the theory, change the theory.
Re: Drag radials rear with bias sportsman fronts? [Re: CMcAllister] #3016514
02/18/22 12:55 PM
02/18/22 12:55 PM
Joined: Oct 2003
Posts: 6,859
my own world
theraif Offline
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if i recall it had to with daily drivers back in the day about having a bias on one side and radial on the other shruggy

Re: Drag radials rear with bias sportsman fronts? [Re: theraif] #3016684
02/19/22 02:23 AM
02/19/22 02:23 AM
Joined: Jan 2003
Posts: 10,765
Central Valley, CA.
Quicksilver440 Offline OP
I Live Here
Quicksilver440  Offline OP
I Live Here

Joined: Jan 2003
Posts: 10,765
Central Valley, CA.
Thanks everyone…just ordered some drag radials!

Re: Drag radials rear with bias sportsman fronts? [Re: Quicksilver440] #3016710
02/19/22 09:23 AM
02/19/22 09:23 AM
Joined: Jan 2003
Posts: 2,603
A shed in England
Tig Offline
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Tig  Offline
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Joined: Jan 2003
Posts: 2,603
A shed in England
Originally Posted by Quicksilver440
Thanks everyone…just ordered some drag radials!

Let us know how you get on with them, we picked up 2 10ths switching to radials but the car used to pound bias ply's. Thanks.


'74 Challenger..9.46 and 145.9 so far. 4023lb!!!# N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @142.4 with our old mule 580 wedge
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
Re: Drag radials rear with bias sportsman fronts? [Re: Tig] #3016776
02/19/22 01:41 PM
02/19/22 01:41 PM
Joined: Sep 2003
Posts: 16,215
north of coder
moparx Offline
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Posts: 16,215
north of coder
as long as both tires are the same on each axle, you should have no problems.
bias [especially skinny ones] will tend to "hunt around" a bit on "rain grooved" roads, but dialing in as much positive caster as possible, and toeing in an extra 1/16" will keep that to a bare minimum.
over the years, i have ran just about every combination of tires you can imagine, and on all types of cars, and have never had a problem running radials and bias tires together.

as to the speed rating on tires, it is xx[x] mph for yz amount of time.
so even if the tire is rated for 95mph, the few seconds it spends at 125 will not be a problem.
my opinion only ! your mileage will vary.
beer

Re: Drag radials rear with bias sportsman fronts? [Re: moparx] #3016791
02/19/22 02:32 PM
02/19/22 02:32 PM
Joined: Jul 2006
Posts: 4,310
Puyallup, WA
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StealthWedge67 Offline
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StealthWedge67  Offline
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Joined: Jul 2006
Posts: 4,310
Puyallup, WA
I had always heard this was an issue, but I’ve been running Pro Bracket Radials with ET Fronts for a couple years now. No issue.


LemonWedge - Street heavy / Strip ready - 11.07 @ 120






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