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stock tires 205/55/16; i wanted to replace with something a bit wider but without going too big. ordered 225/50/16 at least i thought. actually ordered 225/55/16. do i keep? will the 225/ 55 strain the moderately powered engine? will 225/ 55 negatively impact ABS functioning? should i switch to the 225/ 50's? the numbers vs stock:225/55/16 are 3.5% bigger225/50/16 are basically the same match205/60/16 are 3.2% bigger (these are my winter tires)215/60/16 are 5.1% bigger.the general rule seems to read don't go larger than 3%. people seem to caution others considering larger tires like a 225 but i didn't read as much concern re: 215/ 60's which result in the biggest change.question? will I be ok with 225/55's or do i go 225/50? would appreciate anyone's $.02. thanks.

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i guess just one attachment at a time? here's the 225/ 55's.again, any and all feedback would be appreciated.

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i was running 225/45r/17the first number is the diameter calculated, correct me if I'm wrong. your acceleration will be slower but overall better mpg if u are a highway driver.im actually running 215/45r/17 now about 1in smaller then stock overall diameter. not sure what the stock tire size is

I don't see the problem, as long as the tires don't rub. But with the bigger tire, acceleration will suffer.They may also look fatter on the rims...

If you change to a different size tire, your speedometer and odometer will be off a bit. Usually the extra load it puts on your drivetrain is minimal.

thanks. had a mechanic tell me larger tires could potentially throw off the ABS and AWD. i'm not sure how large is too large before that happens. will continue to look into things.

I wouldn't worry too much unless you were going up in size by A LOTAlso, Welcome to another winnipegger. dont see too many on here

Places like Tire Rack seem to say that 3% larger (as you noted) or smaller than stock throws off the ABS somehow.That said, I just went to 3.2% on tires on my Civic and have not noted any issues. I actually went 10mm narrower on the tire w/a higher aspect ratio. Of course, I didn't try any panic stops to see what the ABS did.

This is a helpful site:http://www.miata.net/garage/tirecalc.htmlMaybe you've already gone there - as you have the numbers all calculated.This says your new tire size as stated above is only .1% off compared to stock tire size, which is almost a perfect match. Unless it rubs inside or out, you should be fine.Your mpg will suffer a bit (increased rolling resistance). Your handling should improve a bit.The tire store may hesitate mounting so wide a tire on the stock rim. They might need to measure the width of the rim first.

going from a 205/55/16 to a 225/55/16 the width of the tire changes.. the height doesn'tThe first number is the width of the tire. The second number is the side wall height and the third is the rim size opening.I run 225/40/18 for my summersI run 205/60/16 for my winters

Quote, originally posted by keithvibe »going from a 205/55/16 to a 225/55/16 the width of the tire changes.. the height doesn'tThe first number is the width of the tire. The second number is the side wall height and the third is the rim size opening.I run 225/40/18 for my summersI run 205/60/16 for my wintersactually, it doesn't just work with the first # being the width, second # the side wall height, and the third the the rim size...there is a aspect ratio to the width and the height of the side wall, so just chaning the "1st" number doesn't only change the width of the tire, but it will also change the height.put a 225 60 16 next to a 225 50 16 and they will not be the same width.Some info about the aspect ratio:The 50 indicates that this tire size's sidewall height (from rim to tread) is 50% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall. We know that this tire size's section width is 225mm and that its section height is 50% of 225mm. By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43". If this tire were a P225/70R16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall.

Quote, originally posted by Kamikaze »put a 225 60 16 next to a 225 50 16 and they will not be the same width.Maybe you meant to say "height", rather than "width".I think everything else you said was correct but I believe the above quote is wrong. The "225" is a measurement in millimeters and so is always a constant 225mm in width. Changing the aspect ratio affects the sidewall height - meaning that a 225/50R 15 and a 245/50R 15 are going to have different sidewall heights, even though they aspect ratio on both is "50".