Technical > Jon's Wheel House

Hoosier replacement tires

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Supercat:
That does not look fun.
Hope you get back to normal soon

GlennLever:

--- Quote from: Supercat on March 12, 2017, 06:26:55 PM ---That does not look fun.
Hope you get back to normal soon

--- End quote ---

So...we just got our power back and now we have this

WINTER Storm Warning REMAINS IN EFFECT FROM 8 PM MONDAY TO 8 PM EDT WEDNESDAY...

    Locations: Monroe...Wayne and Northern Cayuga counties.

    Timing: From early Monday evening through early Wednesday evening.

    Hazards: Heavy snow and blowing snow.

    Accumulations: 1 to 2 inches Monday night...3 to 5 inches Tuesday...3 to 6 inches Tuesday night...3 to 5 inches Wednesday...and an inch or less Wednesday evening...leading to storm totals of 8 to 16 inches.

    Winds: North 20 to 30 mph with gusts up to 40 mph.

    Visibilities: As low as a half mile at times.

    IMPACTS: Heavy snow and blowing snow could produce very difficult driving conditions with very poor visibility and deep snow cover on roads.

This had been an extremely mild winter up to this.

JrFuel Hayden:
Winter Storms, that's one of the reasons I moved from Milwaukee to SoCal in 74.
Sorry, Glenn I have not gotten back to you sooner, my computer got a cold.
The D2585 Goodyear 31x12x15 is actually 12.5" wide and a little wider on 12" wheel. Section width is 15.2" and 96.5" roll-out. One of the best things about that tire is it only weighs 22.6 lbs, the next available 12" tire is 30 lbs. Keep in mind the more rotating weight, the more power it takes. The D1288 Goodyear 33x12x15 has a 102" roll-out, with only one compound D-7 which is one compound softer than the D2585, D-3 which is a hard compound to help keep the tires spining some to not dead hook and pull the motor down out of the RPM range your motor is happy.
 A little history here, in 2012 Goodyear decided not to keep a number of tires on their stocking production list. I found out that GY would make another batch of the 12" tires IF I gave them a solid order of 150 tires. When I gave the guy in charge of production schedule, he said "WOW, how did you do that, because when we looked at just making 100 tires, we would be sitting on them for 2 years."  Turns out I did another Special order in 2015, when I ordered the D1288 and D2585.
We run 5.75 to 6.25 lb of pressure on 12" wheels with the higher pressures when I'm looking for more bite, and lower pressures when I want more tire speed, and to help tire shake, running 1.01-1.03 sixty foot times, and 7.0 ET's at high 180's mph.
I have heard from some Comp racers, including Frank Parks that they have found the Hoosiers have a somewhat narrow track temp range. Some have said below 70°, and above 110° they will smoke. Even tho Parks has retired from racing, but not stopping building race cars and parts, they did try M&H 33x12x15, i think mostly because they have less static rear-end weight because their motor is out 54".
Glenn, I would think the 2585's would work for you, granted you are not racing a light weight JrFueler, but you are also your motor is further back and is heavier, your motor makes more torque than us, which should work good with your motor location. Most of the Heritage jrfuel teams run the D2585, and lot of the NE-1, NE-2 teams too.
Call me if you decide on either of the Goodyears, 800-624-3803, 805-444-4489, cell
Jon
I hope this helps

jimc:
Glen
I have a set of the 2585 brand new never mounted I got from Jon, Matt is buying my used set for his son's car. I went to a blower motor this year and needed to go taller which I have now. If interested either pm me or call me cause some how there's at least one set going north this week soon. These were stored in cool dry place in black bag never mounted I'll give great price.

Thanks
Jim
908 612 0548

GlennLever:
Attached are four pictures, I have used Photoshop to increase the contrast so you can see the checking more clearly that we were talking about.

At this point I would like to run these tires another year, as next year we will be upping our game to a 7.0  index and will need new tires  (again) at that point.

So if these are “safe” I would love to run them another year.

DSC_2269                  is an overall picture
DSC_2270                  Close up of the checking in the worse spot I can find
DSC_2271                  current tire size
DSC_2272                  date code  “N9T0”, also more visible checking
Steve Fuhman 006     Side wall wrinkle

This is the research I have now

Manufacture                   Part #             Tire Size                  Compound                   Rim                  Section              Tread            Circumference
Hoosier (current tire)     18225             31 X 12 – 15            C11      Med                 12                   16                       12                97
Hoosier                          18221             31 X 10.5 – 15         C07      Med                 12                   14.5                   11                 97                           Best Compromise?
Hoosier                          18237             31.5 X 13.5 – 15      C07      Med                 14                   17.2                   13.5              99.5

GoodYear                       2018               31 X 13 – 15            D5 Med Hard               12                   15.6                   12.8              96                           Next best?, Raise RPM 100
GoodYear                       2585               31 X 12 – 15            D3 Hard                      12                   15.2                   12.5              96                           Hard Compound, Raise RPM 100

M/T                                3072               31 X 13 – 15            M5       Med                 12                    15.7                   13                 98

I could stand to raise the RPM at the finish line

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