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Tire Sizes??

Old 01-16-2011, 02:59 PM
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stanngg
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Default Tire Sizes??

So, time for new tires. Thinking about going a little bigger. From 235/50/18 to 255/45/18. Will this affect ride quality? and how does it affect speedometer readings??
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Old 01-16-2011, 04:26 PM
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Fifthwind
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Originally Posted by stanngg
So, time for new tires. Thinking about going a little bigger. From 235/50/18 to 255/45/18. Will this affect ride quality? and how does it affect speedometer readings??
None and none. This change will be plug and play. But it will look a little nicer.
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Old 01-16-2011, 04:37 PM
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Nuke
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That's actually a pretty good match. Your speedometer will be off by 0.4 MPH higher than it is now, assuming the tire specs are the same from brand to brand. Use this: http://www.1010tires.com/tiresizecalculator.asp

More importantly, what is the width of the wheels are on your car? Most tire manufacturers recommend 8.5" min for 255's, if I recall. An 8" width can take a 245/.
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Old 01-16-2011, 04:44 PM
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eolson
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If you go with a quality summer tire at 255/45/18, you will have the same ride quality basically, but better grip in 65 degrees and up. I loved my Goodyear F1 Eagle D-3's summer tires on my stock 64W bullit rims. Worth the upgrade. Erik
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Old 01-16-2011, 05:31 PM
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MadStang40
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I myself have some 255/45/18's (goodyear eagle f1s) and I gotta say I really couldn't tell the difference. I'd say go for it!
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Old 01-16-2011, 07:57 PM
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stanngg
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Yeah...I thought it would give it a little better look!


Originally Posted by Fifthwind
None and none. This change will be plug and play. But it will look a little nicer.
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Old 01-16-2011, 08:00 PM
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stanngg
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not sure of the stock 18" rim. Need to check. So I'm looking at either a 255 or 245...Either one should look pretty good I hope!


Originally Posted by Nuke
That's actually a pretty good match. Your speedometer will be off by 0.4 MPH higher than it is now, assuming the tire specs are the same from brand to brand. Use this: http://www.1010tires.com/tiresizecalculator.asp

More importantly, what is the width of the wheels are on your car? Most tire manufacturers recommend 8.5" min for 255's, if I recall. An 8" width can take a 245/.
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Old 01-16-2011, 08:05 PM
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Thinking about going with this BF Goodrich...

http://www.tirerack.com/tires/tires....oModel=Mustang GT&autoModClar=Coupe&partnum=545YR8GFTAKDW2&tab=Si zes

I like the GS-D3s, aren't the discontinued though?



Originally Posted by eolson
If you go with a quality summer tire at 255/45/18, you will have the same ride quality basically, but better grip in 65 degrees and up. I loved my Goodyear F1 Eagle D-3's summer tires on my stock 64W bullit rims. Worth the upgrade. Erik
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Old 01-16-2011, 08:06 PM
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did they fit on your stock rim?



Originally Posted by MadStang40
I myself have some 255/45/18's (goodyear eagle f1s) and I gotta say I really couldn't tell the difference. I'd say go for it!
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Old 01-17-2011, 12:59 AM
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mkaishar2
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I just bought these last week:

http://www.tirerack.com/tires/tires....omCompare1=yes

will be having them installed next week, same chrome 18" x 8.5 bullit wheels.
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