ill throw it out there and see what comes up.. currently im running 185/60r14's . so if my numbers are right they are 914.6 revolutions per mile..here is the plan . i have some 15" rims. and planning on buying some 185/60r15's for a bit of extra ground clearance. the 15's are specd at 876.1 revolutions per mile..how much of an effect will this have on my car. 91 323 b6, 5-speed...lets say at 60mph..will it rev higher or lower??? don't know the final drive gearing.. thanks in advance..
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dude, you're putting way too much thought into that...1992 Ultra Blue Metallic EGT - The 'scort with no name - crap>reliable daily>rallycross prep>stage rally
Featured in Rally Gearbox Magazine 3/1/11
"There's a hierarchy of insanity in motor sports. Normal people think all racers are crazy. Folks who race sedans think people in open-wheel cars are nuts. People who race cars of any kind think motorcycle racers are absolutely off theirs meds. But there's one group that everyone agrees is made up of the most extreme, the most daring, and absolutely craziest people in racing - rally racers."
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lower revs, but it will mess up speedo readings. you'll be doin like 65-70, & speedo will say only 60.
94 pro base model, all synthetic fluids, s/r struts, front & rear ebay upper strut bars,front & rear tie bar, ZX2 1" front swaybar, EGT 21mm rear sway bar, custom delrin endlinks front & rear, custom delrin rear swaybar mount bushings, EBC front blanks & redstuff pads, CS ss brake lines & dot 4 fluid, big drum brakes in rear (from ZX2, free parts), 2.25 custom exaust w/magnaflo oval muffler, 4-wire o2 sensor, custom ram-air, 4-wire BP tb, MSD super conducter plug wires, MSD Blaster SS coil, NGK iridiums,OEM weighted shift knob, ebay short shifter, bronzoil bushings, CS ss clutch line, custom air splitter, mx-3 recaro drivers seat, EGT foglight switch, 35w 5000k hi/lo hid's
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lightened flywheel & clutch; in garage,
Miata Daisy's; after new tiresComment
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185/60R14's are 887revs/mile
185/60R15's are 850revs/mile
When speedo reads 60mph, you'll actually be doing 62.6mph.
If you were to go with a 195/50R15, that's 889revs/mile and when speedo reads 60mph, you'd actually be doing 59.8mph. So that's your best bet for keeping your speedo/odometer 99.9% correct
The shorter sidewall would make you lose some comfort on the road, but give you slightly better performance.
Hope that helps in your tire buying decision!-Dennis
95 Nissan Pathfinder 4x4 - 191k miles
I'll be back in the BG game eventually!Comment
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snap! what about tire pressure!
depending on how much is in there makes a difference aswell! ya'll gettin' technical and $h!t....
1992 Ultra Blue Metallic EGT - The 'scort with no name - crap>reliable daily>rallycross prep>stage rally
Featured in Rally Gearbox Magazine 3/1/11
"There's a hierarchy of insanity in motor sports. Normal people think all racers are crazy. Folks who race sedans think people in open-wheel cars are nuts. People who race cars of any kind think motorcycle racers are absolutely off theirs meds. But there's one group that everyone agrees is made up of the most extreme, the most daring, and absolutely craziest people in racing - rally racers."
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i have never thought about tires that much. i just drive on them. lol
'88 323 sedan, K-swapped..
'03.5 Mazdaspeed Protege - miss it so much..
'01 Dodge Ram 3500 Cummins - 323 haulerComment
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there are many tire calculators out there that would have done all these calculations for you...
btw the miata.net one is a great one!There are no stupid questions, just stupid people.Comment
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ive done the 195/50r15 thing . in the dirt they didn't work too well . wound up destroying 2 wheels . i play in the dirt quite a bit.. so i prefer the extra ground clearance till i get the mx3 v6 struts. and skid plate this beast . have lost and broken a few bits n peices with the lower side wall tires..Comment
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