Trying R Compound Tires for First Time
#31
Three Wheelin'
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#32
Race Car
Thread Starter
#33
Nordschleife Master
Join Date: Sep 2004
Location: Not close enough to VIR.
Posts: 9,429
Likes: 0
Received 2 Likes
on
2 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I've said it before, but the best sounding car EVER at Road America is Jean-Louis and Agnes' 16v Euro which has MSD headers, a Y into a 3 or 3.5 single pipe into a straight-thru Magnaflow (..I think). That car sounds like a racecar should. It has a higher pitch (..not rumbley at all), while being very harmonically rich. People come up in the pits and comment on it's sound all the time.
#34
Rennlist Member
#35
Race Car
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I hope stock works.
I am not looking at extreme settings. I just wanted to start at around -1.5 and see which way to go from there. Since I can't even get into that ballpark, what are my options? I am pretty sure that I have adjustable spring perches. Can I lower my 86.5 just enough by adjusting these to get a bit more range in alignment settings?
Thanks!
#36
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
If you lower it now , the toe also changes... that wastes the alignment. Run it like it is then consider using early the longer lower arms and spacer shims ( GM style Y spacers) on the late uppers then of course another alignment . Also max out the caster at the same time it greatly adds recovery to a wheels pointed forward mode...unless you are still going backwards after the spin
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#37
Race Car
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
It bugs me a bit that these guys didn't suggest lowering as a means of getting to the specs I was looking for. It was a performance shop.
I am friends with a guy at a tire center. Maybe he will work with me under a "lifetime" alignment arrangement to get this squared away.
I am not familiar with these pieces you are mentioning. Are they things that get put in when someone goes to the effort of installing aftermarket sway bars?
Thanks.
I am friends with a guy at a tire center. Maybe he will work with me under a "lifetime" alignment arrangement to get this squared away.
I am not familiar with these pieces you are mentioning. Are they things that get put in when someone goes to the effort of installing aftermarket sway bars?
Thanks.
#39
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I am not familiar with these pieces you are mentioning. Are they things that get put in when someone goes to the effort of installing aftermarket sway bars?
#40
Race Car
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I have one foot on the slippery slope.
I expect tires to magnify body roll. Will need coilovers, swaybars, race seats & harnesses, start lightening, wider wheels, and start thinking about rollbar or rollcage.
Do you anticipate that R tires on my old stocky car as is will cause the car to become more unpredictable?
Thanks for the input.
#41
Race Car
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
That's because lowering the car would not help increase in the negative camber that you need.
Those pieces that Jim mentions are the only way you will be able to increase your negative camber, and are independent of any sway bars, but certainly can be used with aftermarket swaybars.
Those pieces that Jim mentions are the only way you will be able to increase your negative camber, and are independent of any sway bars, but certainly can be used with aftermarket swaybars.
I kinda expected extreme camber settings would need modification. That is true of many cars. I didn't think that we would be limited to as little as -.7. I mean, geez, that was the alignment setting I was given by default after I had my tranny off the car.
Thanks.
#42
Race Car
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Update. I didn't detect a dramatic change in behavior with the tires. I pushed them a few times and saved them a few times when they broke loose, so I do not fear snap-spin at this point. Even drove them in the wet for a couple of sessions, no problems. The car turned in better than on old street tires, so improvement was noted.
I did notice wear on the outside of the the tire tread, no surprises I guess, so camber plates will need to go on the menu.
Thanks to everyone for sharing your knowledge and experience with me.
I did notice wear on the outside of the the tire tread, no surprises I guess, so camber plates will need to go on the menu.
Thanks to everyone for sharing your knowledge and experience with me.
#43
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Glad you had a good run James.
My personal experience was that when I ran the R-compounds, it wasn't a heavens-parting, angel's singing, life enlightening experience of performance compared to running street tires......
until I got back on the track with the street tires after having running the R's for a bit.![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Hippo on rollerskates for sure.
My personal experience was that when I ran the R-compounds, it wasn't a heavens-parting, angel's singing, life enlightening experience of performance compared to running street tires......
until I got back on the track with the street tires after having running the R's for a bit.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Hippo on rollerskates for sure.
#44
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
R Compounds take time to learn too - It's taken me almost two years to finally get to where I can feel the edge. I ran Pacific Raceways with the Yokohama AVS 100's and the Pilot Sport Cup, same day, same conditions, pushing the AVS 100's to the max - almost 10 sec's a lap difference.
#45
Chronic Tool Dropper
Lifetime Rennlist
Member
Lifetime Rennlist
Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Update. I didn't detect a dramatic change in behavior with the tires. I pushed them a few times and saved them a few times when they broke loose, so I do not fear snap-spin at this point. Even drove them in the wet for a couple of sessions, no problems. The car turned in better than on old street tires, so improvement was noted.
I did notice wear on the outside of the the tire tread, no surprises I guess, so camber plates will need to go on the menu.
Thanks to everyone for sharing your knowledge and experience with me.
I did notice wear on the outside of the the tire tread, no surprises I guess, so camber plates will need to go on the menu.
Thanks to everyone for sharing your knowledge and experience with me.