INCREASE OF TIRE RIM/WHEEL SIZE, Advise on going from 205/50 to ??? |
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INCREASE OF TIRE RIM/WHEEL SIZE, Advise on going from 205/50 to ??? |
R8CERX |
Aug 21 2014, 08:06 PM
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#1
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2014 New year resolution: To get along with Woody... Group: Members Posts: 606 Joined: 5-June 13 From: California Member No.: 15,972 Region Association: Southern California |
Hello Folks!
So, need more meat all around the car--2.7RS engine is way too much power to put down on the existing 205/50-15. I am certain many of you have come to this point--need your advise in order to not reinvent the wheel (punt intended!) (IMG:style_emoticons/default/biggrin.gif) Conditions: 1-want to keep existing 914-4 suspension, links, and brakes (actually, front brakes are fitted with BMW calipers; rears are still stock). 2-Planning to add spacers to the wheels in order to gain more space inside fenders (thus need to flare front and rear fenders; for certain rear fenders) 3-Want to keep same size tire all around; so I can rotate them. OPEN FOR CHANGES: A-Open to changing springs and shocks--please advise brand and rate of springs/suggestions B-What size rims/brand or from what car (944 for example) could I get rims to fit 235? 225? what has worked for you? or I should avoid? C- Can the existing 4 bolt pattern hubs be converted into a 5 lug pattern hub? D- will add spacers to either 4 or 5 pattern as needed and add screw/bolt INSERTS E-Should I keep the 4 bolt pattern over the 5 bolt pattern? cheaper rims in 4 configuration? (IMG:style_emoticons/default/confused24.gif) PS- I will be selling rims and tires once I get the above set up going; anyone has parts to exchange for what I trying to do, I am all ears! (IMG:style_emoticons/default/blink.gif) Look forward to your inputs! Regards R8CER X (IMG:style_emoticons/default/first.gif) Attached image(s) |
brant |
Aug 23 2014, 07:33 AM
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#2
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914 Wizard Group: Members Posts: 11,739 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
For actual performance use you need a wider wheel than a cookie for a 245 tire. Stick to the 225 tires if you use the cookie cutters. They are even ideal to use a 205 tire on that 7 inch rim if you are making these changes for crisp performance
Also the adapter method for a 5 bolt conversion bolt pattern is frowned upon for performance use. Not even legal in some events. |
R8CERX |
Aug 23 2014, 09:28 AM
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#3
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2014 New year resolution: To get along with Woody... Group: Members Posts: 606 Joined: 5-June 13 From: California Member No.: 15,972 Region Association: Southern California |
For actual performance use you need a wider wheel than a cookie for a 245 tire. Stick to the 225 tires if you use the cookie cutters. They are even ideal to use a 205 tire on that 7 inch rim if you are making these changes for crisp performance Also the adapter method for a 5 bolt conversion bolt pattern is frowned upon for performance use. Not even legal in some events. Got it-- 225 maximum on cookie cutters No adapter --are you talking about the spacers? to allow wider rims? not ideal for competition? |
jhadler |
Aug 25 2014, 02:09 PM
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#4
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Long term tinkerer... Group: Members Posts: 1,879 Joined: 7-April 03 From: Lyons, CO Member No.: 529 |
If you're waiting on different wheels sometime down the road, go no wider than 225's right now. Really.
The only reason to shoehorn really wide tires onto narrow rims is if you're in a competition class that restricts wheel width. Even then, it's a matter of rapidly diminishing returns. As you pinch a tire onto a narrower rim, you will be pulling in the sidewalls under the tread face. This causes the tread face to bow outward, and thus reduces your effective contact patch considerably. You will get FAR better performance from 225's on an 8" rim, than you will with 245's. In addition to the tread face remaining flatter, and in more contact, the sidewalls will be more rigidly supported by the wheel, giving better response. Win win. "Where the rubber meets the road" may be cliche, but here it's the truth. -Josh |
R8CERX |
Aug 26 2014, 09:37 AM
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#5
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2014 New year resolution: To get along with Woody... Group: Members Posts: 606 Joined: 5-June 13 From: California Member No.: 15,972 Region Association: Southern California |
Thank Josh! (IMG:style_emoticons/default/drunk.gif) If you're waiting on different wheels sometime down the road, go no wider than 225's right now. Really. The only reason to shoehorn really wide tires onto narrow rims is if you're in a competition class that restricts wheel width. Even then, it's a matter of rapidly diminishing returns. As you pinch a tire onto a narrower rim, you will be pulling in the sidewalls under the tread face. This causes the tread face to bow outward, and thus reduces your effective contact patch considerably. You will get FAR better performance from 225's on an 8" rim, than you will with 245's. In addition to the tread face remaining flatter, and in more contact, the sidewalls will be more rigidly supported by the wheel, giving better response. Win win. "Where the rubber meets the road" may be cliche, but here it's the truth. -Josh |
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