The usual place (not a race shop) that I have mount my tires has had trouble not with getting them on the 15x7 K1's, but getting the bead to set.. anyone ever have this issue? any tips I could pass along to them? they said they went up to 55psi, but no dice as yet..

 

Why not use more air pressure?

 

It is a ******* nightmare... I've had issues with 205/50/15s, 225/50/15s and 225/45/15s RA-1s not wanting to seat.

Toyo says its the wheels. I kind of believe it might be a little of both. I've got 12 wheels, 8 are Team Dynamics: 4 from one purchase, 4 from another. Two from the first set (silver) ALWAYS give me trouble. I just went to the tire shop today to pick up four new 50s plus four used tires I had mounted for this weekend. Sure as hell, two on the silver rims would not seat. Even at 140PSI laying in the sun most of the day. They tried three times. They are in my trailer right now without seated beads. Just gonna have to deal with it at the track...

Last time I got some 45s on the same wheels. The guy in the tire truck finally got it done, but he told me he would never work with those wheels again.

It is VERY frustrating. Interesting to hear I'm not the only one.

Thawley

 

The last time I had the 225's mounted on my K1's (about 3 months ago), the guy had to work with mine for about an hour to get 4 of the 6 to seat properly. 2 of them went on fine, the other 4 were a total bitch. I have never had a problem before this last mounting.

Just an idea. But I think it has something to do with the volume of air flow to inflate the tire. It seems that the tire shop that normally does my tires has no issue at all getting them to seat, but they have a huge compressor right next to the tire machine with a large amount of air flow. I think the smaller flowing lines tend to not fill the tire as fast, and thus it has a hard time seating.
That is just my off the wall guess though...

 

I have had two sets mounted no problems. First set on K1's and the second set on A-spec Finalspeeds.

 

i have not had a problem with the toyos till this year....just had 8 mounted and none gave trouble...but time before 2 out of the 4 gave trouble...then 2 out of 2 the time before that....all are on the same wheels....

i have to think that it is the toyo cause i believe they switched rubber compounds. cause toyos sure don't last as long as they use too....

chad

 

let them sit the hot sun all day. use lots of lube. you want a tire that is a bitch to seat, try a 245/30/18 on an 8" wheel. my tire guy gets 225/50/14's on a 5" wheel and even he had trouble with these.

 

It seems like the type of lube used makes a difference as well. Using something extra-slick makes it easier. I had problems recently with my 205/50-15s (Azenis 615 and Hankook Z211s) on BC SF and Kosei K1 wheels respectively. Both required a stupid amount of air, something like 110psi. The Azenis especially, before it seated fully, you could watch the seated portion inflate beyond what looks like anything safe

 

The first time I mounted Azenis I had a NIGHTMARE. Ive done about 10 sets since and I dont even break a sweat anymore :-p

Ill have to try some RA1s, Anyone in the MD area wanna bring some to me to give a shot, come onnnnnn down.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mstewar &raquo;</TD></TR><TR><TD CLASS="quote">The usual place (not a race shop) that I have mount my tires has had trouble not with getting them on the 15x7 K1's, but getting the bead to set.. anyone ever have this issue? any tips I could pass along to them? they said they went up to 55psi, but no dice as yet..</TD></TR></TABLE>
Usually it is safe to use up to 80psi to seat the bead. Pounding on the tread with a blunt object (in the area where the bead won't seat) while inflating will help as well.

 

Here is what we do. Its usually the outside lip that doesent sit. Befor you put and air in the tire. Make sure the lip of the tire is lubed well. Also we spray the inside lip of the rim with water or something than can slide quickly. The lip seats at 100PSI.


Edo

 

well.. good to hear I'm not the only one.. I've had 205-50-16 kumho's and RA1's on these wheels before.. first time I've ever had trouble..

they said they beat on the tire with a hammer to no avail..

I'll tell them to try more air..

thanks!

 

I've used a ratcheting tiedown around the tread of the tire before. Squeezing the tread down a bit tends to force the beads out a little.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">i have to think that it is the toyo cause i believe they switched rubber compounds. cause toyos sure don't last as long as they use too....</TD></TR></TABLE>

I haven't noticed any difference in treadlife with the RA-1 over the past several years of using them on the track, and I keep track of my track miles on each set.

About two years ago, Toyo changed the treadwear rating on the RA-1 from 60 to 100. I asked their technical folks whether they changed the tire at all, or if it was just a change in rating for the exact same tire, and they said it was the latter, that they decided that 100 was more realistic/accurate. (Not that anyone relies on treadwear ratings, but it shows that they didn't change the tire at that time.)

Maybe you're just driving them harder...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chad &raquo;</TD></TR><TR><TD CLASS="quote">
i have to think that it is the toyo cause i believe they switched rubber compounds. cause toyos sure don't last as long as they use too....</TD></TR></TABLE>
plenty of SM guys would agree with you, but maybe its because you are driving faster now? Sliding the car more? Are you shaving them the same?

 

One word....CHEETAH!



See one in action and you will never look at tire mounting the same way again:

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mcmmotorsports &raquo;</TD></TR><TR><TD CLASS="quote">One word....CHEETAH!



See one in action and you will never look at tire mounting the same way again:

</TD></TR></TABLE>


Explanation please?


Modified by prkiller at 7:13 PM 7/7/2006

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prkiller &raquo;</TD></TR><TR><TD CLASS="quote">


Explination please?</TD></TR></TABLE>

high pressure in the tank is released at high volume. lighter fluid and a match works too, though i'll never admit to having suggested that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by solo-x &raquo;</TD></TR><TR><TD CLASS="quote">high pressure in the tank is released at high volume. lighter fluid and a match works too, though i'll never admit to having suggested that.</TD></TR></TABLE>
Yes, I have seen the lighter fluid trick. SCARY!!
They fill the Cheetah full with air, they place it on the rim of the wheel facing into the tire, they then release about 10 gallons of air at about 150psi within 1 second. Voila, instant bead seat. Also makes for a great gag for unsuspecting shop employees.

 

I worked at a high end speed shop and did tires during my college years. Lots of time it is the operator that makes the difference. Some other time, stiff sidewall with narrow wheels is the culprit.

Be careful using liquid lube. I hate using liquid lube on race tires because it takes at least 24 hrs to dry up and will introduce moisture to the air inside which will cause lots of pressure builds at high temp.

Ever seen a rim spinning on the tire when you get on the gas?

 

iv mounted like 10 sets of these tires ra1 225 45 15 in the last 2 weeks. yea it takes about 70ish psi to pop the bead on. just soap it up good and hold ur ears for the pop. low profile michelin pilot sports are like 10 times worse.

 

There's got to be some trick to it. The Toyo guys at the World Challenge events don't seem to have any problems. of course they arn't playing with 15 inchers either.

 

I have heard that some times it can take up to 110psi for them to bead.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Andrie Hartanto &raquo;</TD></TR><TR><TD CLASS="quote">
Ever seen a rim spinning on the tire when you get on the gas?

</TD></TR></TABLE>

Yep! on the Griggs AIX car, and on my pro7 when I was stupid low pressures (18 cold- we were testing....)

Marcus

 

well, I finally got them mounted.. had to give up at my usual tire shop as they apparently were uncomfortable going higher on the PSI to get it to pop..

sears tire and auto had no trouble with them though..