205/40/17 or 205/45/17???

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Jun 2, 2003

rokenrolcivic

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205/40/17 or 205/45/17???

I just bought some enkei cdr9's today and im getting em insatlled on thursday they have 205/40/17 federal tires on them and i was told that with that size tire it wont screw up my speedometer but alot of people are runnin 205/45/17, now did that screw up your speedometer? wich would be the closest to stock diameter??? i hope 205/40/17's will be ok since i already bought them! and also has anyone heard of federal tires? are they any good? thanks in advance!

Jun 2, 2003

Boilermaker1

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205/40/17 is like 4% off, 205/45/17 is like .8% off. Whoever told you that was an idiot, the only reason you would run 205/40 is to slam the car, or because you think rubberband sidewalls look cool.
To get close to stock, you get 205/45 or 215/45. Both are off by about the same amount, 205 is smaller, 215 is bigger.

Jun 2, 2003

slystad810

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Quote:

Originally posted by Boilermaker1
205/40/17 is like 4% off, 205/45/17 is like .8% off. Whoever told you that was an idiot, the only reason you would run 205/40 is to slam the car, or because you think rubberband sidewalls look cool.
To get close to stock, you get 205/45 or 215/45. Both are off by about the same amount, 205 is smaller, 215 is bigger.

Federal tires are junk. I've seen them before and they're basically just your cheap lo pro tire a la Nankang.

Jun 2, 2003

jongreenway

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205/45/17 is the closest to the stock overall size of the wheel&tire. I think 205/40/17 looks too small, and out of proportion.

Jun 3, 2003

NickDaMans02Civic

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Yeah I would not run 205/40 now if you had a 6th gen civic running 17" rims then yeah 205/40 would be fine. 205/45 is your best bet with my EX I am running 215/45 and its fat but I still love the ride plus I don't gain any miles.

Jun 3, 2003

Voiceofid

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pacing with my friend's stock celica at 60mph, my 215/45/17 were 1 mile off

Jun 3, 2003

FALKEN

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im running 205/45-17 right now...no problems at all and its the closest to the stock diameter

my next set will be 215/45-17...(that is if i dont go for the 19s)

Jun 3, 2003

CivicBR900EX

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i thought 215/45-17 is the closest?

Jun 3, 2003

Boilermaker1

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Quote:

Originally posted by CivicBR900EX
i thought 215/45-17 is the closest?

one is off by .6% and the other is off by .8% Do a burnout on 215/45s and you'll be down to stock. Serously, its so close it doesn't matter. Motor Trend published a study that the average odometer is off by about 8 miles per 1000 traveled anyway. They aren't the most accurate things in the world.

Jun 3, 2003

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cdmx

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How do you think it will look with my rear's with 205/40/17 and the front 215/45/17's???? (changing the fronts only)

Or should i just get 205/45/17

TYPO - i meant 45's

Last edited by cdmx; Jun 3, 2003 at 04:35 PM.

Jun 3, 2003

#11

FALKEN

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i think that it would look like ****...

Last edited by FALKEN; Jun 3, 2003 at 04:41 PM.

Jun 3, 2003

#12

rokenrolcivic

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Ok I got my tire size changed to 205/45/17 instead of 205/40/17 and I also got the tires changed to kumho instead of federal tires, The guy said he was gonna put the 205/40/17's on cause it would make it easier to fit if i lowered it? Now does this mean i wont be able to lower it because i have 205/45/17's now? and are kumho 711's (i think) better than federals???

Jun 3, 2003

#13

cdmx

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Yes i would like ot know if kuhmo's are better than nankangs

Jun 3, 2003

#14

FALKEN

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Quote:

Originally posted by rokenrolcivic
Now does this mean i wont be able to lower it because i have 205/45/17's?

no...just stay with a 'sport' drop (1.75 / 1.5) and you will be just fine

Jun 4, 2003

#15

flotsamm

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I run 205/40/17's. I love the profile and look. Though I think next time I'll got with 45's, for a bit more comfort and rim protection. My 40's are 4% off at the speedometer, so at 100mph your really only going 96mph. At 50, your doing 48mph. When I'm cruising with traffic its still the same, so its not as big deal IHMO.