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Post by David Chong on Dec 17, 2008 19:59:02 GMT -8
My kart came with a few sets of Bridgestone YGC's. I see that the SDKA Formula Y spec is YHC compound. I looked up the tires, and according to Bridgestone's site, multiple forum posts, and the durometer ratings at www.racedudes.com/Tire_Durometer_Chart.htm the YGC's are the "old" code for the YHC tires. In other words, they are the same tire, with the same competition grade/grip level/hardness but apparently an updated sidewall code and possibly an improved compound on the YHC's. Would it be acceptable for me to compete on the YGC's in the Formula Y class, or would it be a DQ on tech? Would I still be able to run in the races if I were DQ'ed? I'm not trying for an advantage (certainly these old compound/code used tires are not an advantage), but as most of you know I'm trying to start on a very small budget. Being able to use the tires that came with the kart would be ideal. Thanks, David |
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Post by guest on Dec 18, 2008 13:19:28 GMT -8
If the tires are noticed after the qualifying heat, you will probably get DQ'd. You can still race on them, but with the dq, you would start every race at the back of the pack, and at the end of the day would have no points awarded for championship standing.
If you want to get your $$$ worth out of those tires, invest in another set of wheels and a set of spec tires (there are more choices availabe than the bridgestones). Use the ygc's for practice, and then switch before the qualifying round.
Tires don't lat that long on the Qualcom parking lot anyway, most racers only get one or rarely two races out of a set. So over a season, you won't be saving much on those ygc's anyway.
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Post by kylekuntze on Dec 18, 2008 14:21:21 GMT -8
The YGC is actually a softer tire. It was about 3/4 second a lap faster then the yhc.
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Post by David Chong on Dec 18, 2008 15:14:53 GMT -8
The YGC is actually a softer tire. It was about 3/4 second a lap faster then the yhc. Oh shoot, in that case I will get a pen and cross out all the G's and replace them with H's!  I'll run the YGC's up at Apex for driver & kart shakedown fun runs. I'll hit up a local shop for tires. Where do you folks go? Is Go-Karting the only option? Thanks, David |
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Post by guest on Dec 18, 2008 15:30:48 GMT -8
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Post by Jeff Shadoan on Dec 18, 2008 17:28:53 GMT -8
Guest,
Thank you for mentioning the Maxxis & Burris tires and posting the link to the SDKA tire options thread.
David,
First, welcome to SDKA. We're excited to have you and your friends join the club for next season. You will have a blast racing at Qualcomm stadium.
After reading the thread about the club's tire options (follow the link in the above post from Guest) let me know if you have any questions on the different tires. As Guest mentioned I am the Maxxis and Burris tire dealer for San Diego. The Maxxis tires were a great success last year. Not only for the drivers but also the club. Burris are also great tires just not used by as many drivers last year. I have excess inventory on Burris and have them on sale right now for 20% off (only $132 per set). They are great tires for the Formula Y/C class (the 2007 champion won the Championship on Burris tires). He moved to a shifter kart in 2008.
Jeff Shadoan
JLS Karting
619-916-8076
sales@jlskarting.com
SDKA Vice President
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Post by Mike Campbell on Dec 18, 2008 18:16:25 GMT -8
Hi David, changing your tires after practice sessions on race day I think is the biggist difference in making your race tires last. In every class that allows more than one make of tires there are drivers that swear by the ones that they use. I had extremely good luck with tire wear last year. I wish I knew why. I only bought 3 sets of tires for the whole season. I wouldn't try to mount new tires on the rims you have during a race day, although you could. If you did that just once you would justify buying another set of rims so you could change tires for qualifying much faster and easier.
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Post by David Chong on Dec 20, 2008 7:55:44 GMT -8
Thanks everyone. I'm Really, really appreciative of you guys taking time to answer questions that have doubtless been asked time and again. Jeff, I'll give you a call so I can get into some spec rubber for next season!
I received 3 sets of rims with the kart, so I'll be able to mount practice rubber and race rubber seperately. There's always so much to do on race day, I'd never want to mess around with mounting tires on rims between sessions. B
Do you guys find that you are significantly changing the handling on different compounds? On first blush, I'd be afraid of setting up the kart to perform on one compound, and then be off by a bit when switching to another compound.
David
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Post by Jeff Shadoan on Dec 20, 2008 11:52:10 GMT -8
If the compounds (more specifically the durometer/hardness) were significantly different then the kart's handling would be different. However, the Maxxis HG3 and the Burris B44 have the same durometer reading as the Brigestone YHC so the handling of the kart will be the same or very similar between the three different tires.
Hope this helps.
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