LOL! Got my custom race wheels today Options

[Joseph Mills]

QUOTE (grantsfo @ Jun 7 2005, 10:53 PM)

[/QUOTE] According to Hoosier optimum wheel width for the A3SO4 205/50/15's would be 7.5" to 8.5". 7.0" would fall below optimum range according to Hoosier on these specific tires. What is your 7.0" optimum wheel width calculation based from?

The Tire Rack chart.

Of course Hoosier's are correct. So the 205s won't be a problem for you. That's good.

I recall that Hoosier's run wider than their numbers. I physically borrowed a set to make sure they would work for my car before I ordered. The last set I had always chirped against the fender when I hit a dip. My Kumhos in the same size do not (even with less neg.camber).

You might want to check Kumho and Firestone specs for the wider rim to see how they would work for you in the event that in the future you become motivated to try other tires (IMG:http://www.914world.com/bbs2/html/emoticons/rolleyes.gif)

[Joe Ricard]

QUOTE (trekkor @ Jun 7 2005, 09:12 PM)

I've got my 205/50/15 Hoosier track tires and my Yokohama A032's on 5.5" Westerns with 4" backspacing and I really like it. The "wrong" backspace effectively gives me a 1" wider track front and rear. It's like running 1/2" spacers. How much tread width you get with the 8" rims, Grant, is what I'll be looking at. I'd consider running a 15x7 rim with 3.5" backspace to widen my track and tire tread footprint if it makes that big a differance. When will you debut the new skins? KT

The 15 x 8 and Hoosier 205/50-15 fit real nice. the side wall is straight up and down.
the contact patch is the entire face of the tread. there is no crown. I ran this weekend with 30 PSI after ten runs the tread wear was perfect. pressures went up a pound or two after each run till Number 8 and then seemed to settle down. camber is set at 1.7 front and rear. cause thats all I can get.
Grip for days. as to the Qustion of how much wider are these Hoosiers than Kumhos? ALOT stacked all Kumhos on 4 lug Fuchs and all Hoosiers on 15 x 8 rims side by side all 205/50-15
Hoosiers are near 7 inches taller my track is near 4 inches wider too. (IMG:http://www.914world.com/bbs2/html/emoticons/rocking nana.gif)

[ArtechnikA]

the guys at Roger Kraus Racing mount race tires on expensive, lightweight racing tires every day. i drove there from Reno to have them do mine.

[Joe Ricard]

I mounted mine myself. Well I have access to a tire machine. didn't balance them because after one event what's the point.
Make sure you use lots of that soapy solution. When the bead finally seat it sounded like a gun going off. Oh the warning label on the tire says not to use over 40 PIS seat bead. Thats good to know. Just a little difficult to wrestle on the rim it took two of us. and a good set of tire irons to keep the bead down in the middle of the rim section.

[Trekkor]

Rich, at HPH can mount them for you, Grant.

KT

[grantsfo]

QUOTE (trekkor @ Jun 8 2005, 05:45 AM)

Rich, at HPH can mount them for you, Grant. KT

Thanks Trekkor, I didnt realize he had tire mounting equipment.

[Brett W]

A 205 is too narrow for an 8in wheel. The 225/50 is the correct size for a non catilevered tire. I could not get the 15*8 with a 5 in backspace to fit under the stock rear fenders even on my heavily massaged rear fenders. With a cantilevered slick (9.5x 23.5) I had to run a .25 in spacer to keep the tire from rubbing the body on the inside.

If you need more power I can help you with that. Look in the classifieds.

[Joe Ricard]

QUOTE (Brett W @ Jun 8 2005, 09:56 AM)

A 205 is too narrow for an 8in wheel. The 225/50 is the correct size for a non catilevered tire. I could not get the 15*8 with a 5 in backspace to fit under the stock rear fenders even on my heavily massaged rear fenders. With a cantilevered slick (9.5x 23.5) I had to run a .25 in spacer to keep the tire from rubbing the body on the inside. If you need more power I can help you with that. Look in the classifieds.

Brett please explain. 205/50-15 Hoosier on 8" rim
I just did it and I think it works great (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)
Them suckers are wide as a 225
I would definately agree with a Kumho at least and inch narrower.

[Mueller]

QUOTE (Joe Ricard @ Jun 8 2005, 04:43 PM)

QUOTE (Brett W @ Jun 8 2005, 09:56 AM) A 205 is too narrow for an 8in wheel.  The 225/50 is the correct size for a non catilevered tire.  I could not get the 15*8 with a 5 in backspace to fit under the stock rear fenders even on my heavily massaged rear fenders.  With a cantilevered slick (9.5x 23.5) I had to run a .25 in spacer to keep the tire from rubbing the body on the inside. If you need more power I can help you with that. Look in the classifieds. Brett please explain. 205/50-15 Hoosier on 8" rim I just did it and I think it works great (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) Them suckers are wide as a 225 I would definately agree with a Kumho at least and inch narrower.

'cause he knows more than the engineers that make the tire??? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) j/k (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

tirerack list the following for a 205/50/15 comp tire

Avon: max rec. width 7.5
Hoosiers: max rec. width 8
Kuhmo: max rec. width 7.5

[grantsfo]

QUOTE (Mueller @ Jun 8 2005, 03:55 PM)

QUOTE (Joe Ricard @ Jun 8 2005, 04:43 PM) QUOTE (Brett W @ Jun 8 2005, 09:56 AM) A 205 is too narrow for an 8in wheel.  The 225/50 is the correct size for a non catilevered tire.  I could not get the 15*8 with a 5 in backspace to fit under the stock rear fenders even on my heavily massaged rear fenders.  With a cantilevered slick (9.5x 23.5) I had to run a .25 in spacer to keep the tire from rubbing the body on the inside. If you need more power I can help you with that. Look in the classifieds. Brett please explain. 205/50-15 Hoosier on 8" rim I just did it and I think it works great (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif) Them suckers are wide as a 225 I would definately agree with a Kumho at least and inch narrower. 'cause he knows more than the engineers that make the tire??? (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) j/k (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif) tirerack list the following for a 205/50/15 comp tire Avon: max rec. width 7.5 Hoosiers: max rec. width 8 Kuhmo: max rec. width 7.5

If you read the information that comes with Hoosier tires they say they publish guidlines outlined by the DOT for comparison sakes - those are the numbers tire rack publishes. They actually reccomend rim width within plus or minus 1/2 inch of the tread width. Given that the 205 Hoosier tread width is 8 inches 8 inch rim width perfect. Mounted my tires today and the sidewalls still buldge over the 8 inch rims.

I did a test fit in the rear. Plenty of inside fender well clearence, the clerence on my mildly rolled rear fenders is close. I jacked up opposite side of the car and sat on the rear fender and the tire didnt get close to rubbing. I dont think I'm going to have much of a problem getting them to fit at the current ride hieght.

But now comes the headache of three piece rims. 3 of my wheels leak. Now I need to get silicone unmount the tires and fix them. I hope this isnt going to be a chronic problem!

[Trekkor]

Why are we withouts pics? (IMG:http://www.914world.com/bbs2/html/emoticons/cool_shades.gif)

KT

[J P Stein]

The number 205 or 225 is the section width...max width orf the tire which is seldom the tread width.....even on Hoosiers.

[Brett W]

Hoosier race tires are much different than a regular street tire. They are much wider than the same size street tire. For most tire applications the best fit for the tire wheel package is to have the wheel the same width as the tire tread face. This assures that the tire sidewall is properly loaded. On a tire such as a 205-50 on a 5.5 inch wheel the tire will actually bulge a little in the middle of the face of the tread surface. On a wheel that is wider than the face of the tread the cornering forces will act upon the sidewall in a manner that is beyond the design parameters of the shoulder of the tire. The side wall will be loaded not in a direct vertical manner. Thus causing a break down in the sidewall stiffness over time.

[grantsfo]

QUOTE (trekkor @ Jun 8 2005, 04:42 PM)

Why are we withouts pics? (IMG:http://www.914world.com/bbs2/html/emoticons/cool_shades.gif) KT

....Because its raining in Bonny Doon. I dashed out during breif clearing this afternoon mounted one rim/tire on the back, unpacked all my fiberglass (Hood, trunk, bumpers) and got the first coat of black paint on them. Rushed everything back inside as clouds came back in. Then got the rear wheel off as it started to rain pulled my car back into the temporary garage.

I have a pic of the tire on the wheel thats it for now. I'm depressed over the leaks. I dont know if I'll get that fixed in time for Saturday.

[grantsfo]

pic of 205/50 Hoosier sitting perfectly on a 8" rim, ...slowly leaking. (IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif)

[Trekkor]

Tasty... (IMG:http://www.914world.com/bbs2/html/emoticons/chowtime.gif)

What kind of leakdown?

Run 'em.

Check pressure between runs.

KT

[grantsfo]

QUOTE (trekkor @ Jun 8 2005, 06:54 PM)

Tasty... (IMG:http://www.914world.com/bbs2/html/emoticons/chowtime.gif) What kind of leakdown? Run 'em. Check pressure between runs. KT

Two of the leakers go like this: "spisssssssssssssssssssssssss" and leak down quickly. My local resources were not up for helping me out. I'm going to call Roger Kraus Racing tomorrow morning and see if they can help me. I dont trust my Silicone sealing skills. Figure they have seen this stuff before and know how to get a good seal.

..and you know I just cant imagine these tires on anything smaller than 8" wheels. Tires buldge over these rims significantly. I'm thinking 8.5" rim is perfect for these tires.

[nebreitling]

nah -- they mount fine on my 6.5"s... the mounting lip goes so far in that i'd bet even a 6" rim would support the sidewalls enough...

as for the leak... god, that's a bummer. they didn't come with a fresh seal? ask Keizer for their sealing procedure -- they'll let you know they proper procedures and torque values and such... should not be real difficult though.

good luck grant -- let me know if there's anything i can do to help, i'd really like to see you run these on saturday.

n

[grantsfo]

QUOTE (nebreitling @ Jun 8 2005, 08:15 PM)

nah -- they mount fine on my 6.5"s... the mounting lip goes so far in that i'd bet even a 6" rim would support the sidewalls enough... as for the leak... god, that's a bummer. they didn't come with a fresh seal? ask Keizer for their sealing procedure -- they'll let you know they proper procedures and torque values and such... should not be real difficult though. good luck grant -- let me know if there's anything i can do to help, i'd really like to see you run these on saturday. n

Yeah they have torque specs, but these were supposed to be torqued from the factory. Seals were there. Only thing I can think is the guy installing didnt follow procedure correctly. Thats after I reviewed it with him. They specifically say not to use bursts of high pressure to seat tires.

I'll just take the wheels to some professionals. I dont have time to screw with this stuff now that my business is taking off. I'm running out of time to to do much more with the car. I'll be lucky to get all the fiberglass on the car by the weekend. I may just install trunk and hood this week.

[redshift]

1/2 can of fix-a-flat?

(IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)


M