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lupo69
Samba Member
Joined: April 19, 2010
Posts: 33
Location: Nanuet, new york
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 Posted: Wed Dec 28, 2011 6:25 am Post subject: Need help on tire size |
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I am building a Manx clone and going for an old school hot rod look. I am using a 17x9 rim in the back and a 15x7 up front. I was thinking of using a 255 50 r17 = 27" tall or a 285 40 r17 = 26 ". For the front using a 195 50 r15 . I am going to use an aftermarket speedo. What size do you guys think works best  Thanks |
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Wetstuff
Samba Member
Joined: September 23, 2010
Posts: 700
Location: Maryland
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| Posted: Wed Dec 28, 2011 10:50 am Post subject: |
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Your F/B sizes sound nice to me. I do not warm to too low a profile on a buggy. ..'cept on that street weapon the AUDI designer did a few years ago.
Here's a great place to play; 'What if.' You can enter every variable for both F/B at look at them both at the same time.
http://www.rimsntires.com/specs.jsp
Cheers,
Jim
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Manx #2614 |
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VOLKSWAGNUT
Fastest VW Belt Changer
Joined: October 14, 2007
Posts: 11056
Location: Flippin' a Belt........ .... Off-n-On ... NC USA
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joescoolcustoms
Samba Member
Joined: August 08, 2006
Posts: 9054
Location: West By God Virginia
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| Posted: Thu Dec 29, 2011 11:33 am Post subject: |
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| Wetstuff wrote: |
Your F/B sizes sound nice to me. I do not warm to too low a profile on a buggy. ..'cept on that street weapon the AUDI designer did a few years ago.
Here's a great place to play; 'What if.' You can enter every variable for both F/B at look at them both at the same time.
http://www.rimsntires.com/specs.jsp
Cheers,
Jim |
That is cool! But I could not figure out how to plug in a 31 10.50 tire.
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Bad News Racing 2018 NORRA 1000 3rd in Class
Best Day Ever Racing 2022 NORRA 1000 2nd in Class and first All Female team to complete the race
Everyone is gifted. Some just do not open the package.
Looks like it was painted with a live chicken,polished with a brick and buffed with a pine cone |
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slalombuggy
Samba Member
Joined: July 17, 2010
Posts: 9147
Location: Canada
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| Posted: Thu Dec 29, 2011 1:14 pm Post subject: |
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I wouldn't go any taller than a 26 in the rear, it will start to affect your final gear ratio and you should have a decent motor to push taller tires, I even noticed the difference with my 2332.
Another thing to keep in mind is that larger wheels/tires are usually pretty heavy and will decreease the stopping power of your drum brakes ifheavy enough so judge your braking distances accordingly when you first put them on.
CB has a gear ratio/rpm calculator in their tech section that is very usefull.
brad |
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joescoolcustoms
Samba Member
Joined: August 08, 2006
Posts: 9054
Location: West By God Virginia
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| Posted: Thu Dec 29, 2011 1:25 pm Post subject: |
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| I wouldn't go any taller than a 26 in the rear |
Rim, or overall wheel?
My current buggy build will have a 28 inch tall wheel on the front and 30 inch on the rear (205 X 75 15 and 31 X 10.50 15). A 4.37 R&P in a IRS T1 case. Dual sport style build.
I like Rick's gear calculator on this web site. It lets me customize each gear and see the impact.
http://www.shining-wit.net/rick/buggy/design/transmission/#Transaxle%20Ratio%20Calculator
_________________
Bad News Racing 2018 NORRA 1000 3rd in Class
Best Day Ever Racing 2022 NORRA 1000 2nd in Class and first All Female team to complete the race
Everyone is gifted. Some just do not open the package.
Looks like it was painted with a live chicken,polished with a brick and buffed with a pine cone |
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slalombuggy
Samba Member
Joined: July 17, 2010
Posts: 9147
Location: Canada
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| Posted: Fri Dec 30, 2011 11:22 am Post subject: |
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| joescoolcustoms wrote: |
| Quote: |
| I wouldn't go any taller than a 26 in the rear |
Rim, or overall wheel?
My current buggy build will have a 28 inch tall wheel on the front and 30 inch on the rear (205 X 75 15 and 31 X 10.50 15). A 4.37 R&P in a IRS T1 case. Dual sport style build.
I like Rick's gear calculator on this web site. It lets me customize each gear and see the impact.
http://www.shining-wit.net/rick/buggy/design/transmission/#Transaxle%20Ratio%20Calculator |
Rims of course 
26" Tires
brad |
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Wetstuff
Samba Member
Joined: September 23, 2010
Posts: 700
Location: Maryland
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