Will need new tires after season
If i swap 28by 10 bias slick to the same size radial( assuming the car continues to hook well) any difference on the slip?

Most say a tenth or better faster on the radial.

Mine ran .15 quicker with Radials.

I've seen from .10 to .18 decrease in ET in the 1/4 mile depending on the power of the car and weather conditions, slower cars gain less than the higher HP cars do

Your finish line rpm's will likely increase because radial slicks don't grow like bias ply slicks.

My car didn't gain much but I think it was needing the growth from the bias tire as I am pretty tapped on gear at the moment. What did surprise me is that my 60ft went down by .05 and I didn't have a traction problem. I log driveshaft speed and while there was maybe some slip with the bias tire it wasn't much. The radial shows a smooth graph with zero tire slip.

I went from a 28x10.5S slick to a 28x10.5 pro bracket radial. I didn't run many passes on the bias tire but I am a big radial fan. But just like you see everyone say when the track is marginal so is the radial.

The radial is 87 i want to run, my bias ply is 88. Want a bit more gear so it might help on that a bit.

Don,
Are you thinking radial slick or a dot drag radial? Some classes require a dot tire, just wondering if that's what you're thinking?

DOT radial. Hoosier 275 like i had on my white Duster.

Im shocked. So from what slick to what radial ? I am fitting some 275/60/15 M/T Pro Radials now and was expecting to run a touch slower than on the 28" slick.

Al,
If you havent bought yet look at the pro bracket radial. Is lighter than pro275 . I had major balance issues with pro275 as well . I am on my second set of pbr 28x10.5r15 . 150 plus passes first set , still have 5-20 left when swapped out
Oh i have only ever run radials on the satellite

Tex

I switched from a Hoosier QTP bias tire of 29.5 x 11.5 to the 30 x 9 Hoosier radial slick. I switched when I had my old 440 in my 63 which ran mid 11's. I did not notice any change in my et but I like the car with the radial slicks as it handles better and has no wondering on the top end at all. Course I run more air pressure in the radials which may be helping it to go nice and straight also as I run about 18 psi in my radials when racing. And I found as long as I stage in the grove where everyone is launching it is very consisdent on the radial slicks. Cant say for sure if my car is any faster on radials but I like them much better then the bias and will not go back to the bias. I have only run the radials with my 493 and they work real good behind my 493 as it always hooks fine as long as I stage in the grove. Ron

Went from a Hoosier 30x9 bias slick to a 30x10.5 Hoosier radial slick.

I tried M/T 29.5/10.5w and M/T 315/60 Drag Radial on the same night at Test and Tune and ran .11 quicker in the 1/8 with the Drag Radials on my D-50. I was running in the 6.30 range at the time. I will never buy a slick again.