I just wanted to know how to determine what size slick is right for my set-up. I've got a ek coupe with about 300whp. I've been looking at a set of 24.5x8.5x13. Just wanted to get some opinions.
thanks

 

24.5x8.5x13 sounds about right to me for 300whp. I think it depends on a lot of things though like tranny gearing, trap speed, etc...

I am running about 230whp at the track and I was kinda in between 22's and 24.5's, so I decided to go with 23's and they are working very well.

 

i'd like to know also

 

well, it's stock gsr gears, phantom grip, and the last time I went traps were in the 104-109 range.

 

what gear and what rev's determine you slick size alot..
For me at 9000 in 4th in my K20A JDM box I can only get 112mph on a 24.5" slick
since I run 115+mph now I have more power I really need to change slick size. probably to something taller like a 25" or 26", but taller slicks like to eat driveshafts, or so the story goes..
You really need to look at your set-up and decide if you are going to hunt for more power or stay where you are. if you are chasing power still maybe start with the slightly bigger slick. But you can still change FD ratio's etc aswell..

 

Redline is 8200 with stock gsr gearing and a phantom grip

 

i would say try a set of 23's and see how they hook

 

it depends a lot on your tranny, are you maxxing out your 4th gear?

better yet, what rpm are you at when you finish the quarter?

 

call John @ m&h he can calculate a formula for you and sell ya a awsome slick.

 

Well I made this a long time ago for Steph and revised it a little for the Club RSX boys. Bsaically go to this page.

http://performance.clubrsx.com/

Bottom right will be technical & Informational Articles.
Click on Gear Ratio to Speed and RPM Drop Calculator (Excel File)

Enter your info Dire Diameter or Roll out. Final drive, Gear ratios, RPM you shift at and it will display your information. Have fun.

 

ok, here's another question, is there any difference in mounting a slick compared to mounting a regular tire?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic97dx &raquo;</TD></TR><TR><TD CLASS="quote">ok, here's another question, is there any difference in mounting a slick compared to mounting a regular tire?</TD></TR></TABLE>

There isnt really, but if the tire mounter isnt familiar with mounting slicks or they are impatient, they can damage the slick and rim.

Slicks need a bit more patience to help seat on the bead. Its not as easy as a reg tire sometimes. And also you cant just pump up the slick to like 30-35 psi to help it seat on the bead. you have to coax it on the bead at a lower psi.
Sometimes it takes several attempts to mount it. deflate, inflate, deflate, inflate, deflate, lubricate the rim, inflate, etc.

 

that's cool, I work for toyota as a tech and was just wondering. Didn't know if it was something I should try or if I should just stick to engine swaps. I guess you just have to take your time? That's cool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic97dx &raquo;</TD></TR><TR><TD CLASS="quote"> I guess you just have to take your time? That's cool.</TD></TR></TABLE>

Yup, with a flexible sidewall(compared to a reg tire), it takes a little more coaxing to get it on the bead. Can't just rely on the machine to do it all.

 

that's fine, about how much air pressure should you use? no more than say 20psi to seat the bead?