225/50/17 new tires!

[fusionsev6123]

I just bought the 17 x 7.5 awd wheel but i dont know which tire to use.

I figured out the the 225/50/17 are for 17 x 7. So I think that I could use 225/55/17 or 225/60/17 for the extra inche and this will help handlig. What do you guy think about this?

[bbf2530]

I just bought the 17 x 7.5 awd wheel but i dont know which tire to use.

I figured out the the 225/50/17 are for 17 x 7. So I think that I could use 225/55/17 or 225/60/17 for the extra inche and this will help handlig. What do you guy think about this?

 

Hi Fusionsev. :D Your tire assumption is incorrect. The Standard tires from the factory on both the FWD (17x7) and AWD (17x7.5) wheels are 225/50/17. That is what you should use.

 

The others will have the same tread width (225 mm), but a taller sidewall ratio (55 or 60). A taller sidewall ratio will actually hurt handling by giving the sidewall more flex. A taller sidewall will also make your car look as though you have truck tires on it. No need for a taller sidewall.

 

Go with the factory size 225/50/17.

 

Good luck. :beerchug:

[fusionsev6123]

Hi Fusionsev. :D Your tire assumption is incorrect. The Standard tire from the factory on both the FWD (17x7) and AWD (17x7.5) 225/50/17. That is what you should use.

 

The others will have the same tread width (225 mm), but a taller sidewall ratio (55 or 60). A taller sidewall ratio will actually hurt handling by giving the sidewall more flex. A taller sidewall will also make your car look as though you have truck tires on it. No need for a taller sidewall.

 

Go with the factory size 225/50/17.

 

Good luck. :beerchug:

Thanks for the reply, but i thought that the 50 was for width not height. My intentions were of getting a wider tire no t a taller.

 

So what about 230/50/17 or 235/50/17. I dont think that widening the tire will get crazy the computer and will improve handling.

[bbf2530]

Thanks for the reply, but i thought that the 50 was for width not height. My intentions were of getting a wider tire no t a taller.

 

So what about 230/50/17 or 235/50/17. I dont think that widening the tire will get crazy the computer and will improve handling.

 

Hi fusionsev. :D No, 50 (or 55 or 60) is the sidewall aspect ratio, meaning the sidewall is that particular percentage of the width of the tire. 225 is the width in millimeters. So a 225/50 will have a sidewall that is 112.5mm tall (50% of 225). A 225/60 will have a sidewall that is 135mm tall (60% of 225).

 

You could go with a 235/50 width if you wish, but it is an odd size, and will be a more expensive tire.

 

You are talking about 10mm (1 centimeter). Less than half an inch (in fact, less than four tenths of an inch). Not really going to be any tangible improvement in handling.

 

Completely up to you.

 

Whatever you decide to do, good luck. :beerchug:

[fusionsev6123]

Hi fusionsev. :D No, 50 (or 55 or 60) is the sidewall aspect ratio, meaning the sidewall is that particular percentage of the width of the tire. 225 is the width in millimeters. So a 225/50 will have a sidewall that is 112.5mm tall (50% of 225). A 225/60 will have a sidewall that is 135mm tall (60% of 225).

 

You could go with a 235/50 width if you wish, but it is an odd size, and will be a more expensive tire.

 

You are talking about 10mm (1 centimeter). Less than half an inch (in fact, less than four tenths of an inch). Not really going to be any tangible improvement in handling.

 

Completely up to you.

 

Whatever you decide to do, good luck. :beerchug:

 

My intentions are of getting a wider look and if the handling is improved that better

What do you think of 245 50 17 is it to much?

[fusionsev6123]

My intentions are of getting a wider look and if the handling is improved that better

What do you think of 245 50 17 is it to much?

[bbf2530]

My intentions are of getting a wider look and if the handling is improved that better

What do you think of 245 50 17 is it to much?

 

Hi fusionsev6123. If you go to a wider tire like a 245, you would need to lower the sidewall aspect ratio to a 45. Otherwise, your sidewall on a 245/50 series will be taller and your speedometer and odometer will read incorrectly.

 

The heavier tire will actually slow your car down slightly as far as acceleration. Additionally, you will see no real street usable handling improvement.

 

Top all of that off with the fact that your tires will be that much more expensive to replace, and there are a whole bunch of negatives just so the tires will be 2 centimeters wider (less than 1 inch).

 

This is just my opinion/advice, so I certainly understand if you do not agree, but, I would recommend you stick with the stock size, 225/50/17.

 

Having stated that (and I promise I will not mention it to you again), you should got to LINK: The Tire Rack and LINK: Discount Tire and read up on their Tire information. I think it will help you understand things much more clearly. Read their FAQ's on tire sizing. It will really help you decide what size tire is best for you.

 

You can also call them and ask questions, as they are very helpful.

 

Whateever you should decide to get, good luck. :beerchug:

[fusionsev6123]

Hi fusionsev6123. If you go to a wider tire like a 245, you would need to lower the sidewall aspect ratio to a 45. Otherwise, your sidewall on a 245/50 series will be taller and your speedometer and odometer will read incorrectly.

 

The heavier tire will actually slow your car down slightly as far as acceleration. Additionally, you will see no real street usable handling improvement.

 

Top all of that off with the fact that your tires will be that much more expensive to replace, and there are a whole bunch of negatives just so the tires will be 2 centimeters wider (less than 1 inch).

 

This is just my opinion/advice, so I certainly understand if you do not agree, but, I would recommend you stick with the stock size, 225/50/17.

 

Having stated that (and I promise I will not mention it to you again), you should got to LINK: The Tire Rack and LINK: Discount Tire and read up on their Tire information. I think it will help you understand things much more clearly. Read their FAQ's on tire sizing. It will really help you decide what size tire is best for you.

 

You can also call them and ask questions, as they are very helpful.

 

Whateever you should decide to get, good luck. :beerchug:

 

 

Thanks. I get what ur saying and I might get the 22 50 17. But my thougths were that if I already bought the 17x7.5 wheels and are half inch wider that regular ones. I could buy a lil bit wider tire, since I actually have to buy a new set of tires, and this will give a wider look.

 

But I didnt think increasing a size or two to the width would be that difficult. I dont want to get a wrong size and mess up the computer reading. The price difference is not that much.

 

Thansk for you help bbf2530

[Ozzie]

Hi fusionsev. :D No, 50 (or 55 or 60) is the sidewall aspect ratio, meaning the sidewall is that particular percentage of the width of the tire. 225 is the width in millimeters. So a 225/50 will have a sidewall that is 112.5mm tall (50% of 225). A 225/60 will have a sidewall that is 135mm tall (60% of 225).

 

You could go with a 235/50 width if you wish, but it is an odd size, and will be a more expensive tire.

 

You are talking about 10mm (1 centimeter). Less than half an inch (in fact, less than four tenths of an inch). Not really going to be any tangible improvement in handling.

 

Completely up to you.

 

Whatever you decide to do, good luck. :beerchug:

 

It's great to see that I'm NOT the only one who truely understands tire size numbers.

 

This is a very misunderstood part of automobile science.

 

The myth of 60s being wider than 70s comes from the old days when they needed to reduce the sidewall height in order to maintain overall diameter. Because the width desctiptor letter (L or F or what have you) was not a very visual way to measure width, very often people mistook L60 to be wider than F70 because of the 60 number. That was the number one reason tire companies switched to the P-Metric system for measureing tires.

 

Albiet, tire companies don't all calculate the width the same way because they measue from tread edge to tread edge and the tread may start earlier or later into the sidewall, it is rarely more than a few mm difference. When choosing an alternate tire for your car, the best way is to refer to the original tire manufactures "rotations or revolutions per mile" and be sure that the new tire you choose is as close as it can be to that count.

 

Example for the MXM4 they put on my fusion:

Tire Size P225/50R17

Type of Tire Luxury Performance Touring

Rim Width Range 6" - 8"

Section Width on Measuring Rim Width 9.1" on 7"

Aspect Ratio 50

Overall Diameter 25.9"

Tread Depth 10/32"

Tire Revolutions per Mile 800 at 45mph

 

Rule of thumb:

As long as the tire size you chose is close to 800 Rev per mile you should be ok.

 

This is THE safest way to be sure you have the best match for your car.

 

Thanks

 

Oz

[mattsger]

I purchased Goodyear Eagle F1 all season tires. They can be expensive but I shopped around and found them for $145.00 a tire. They are wider than the stock tire (from the rim protector feature, which my wife has used!) and give outstanding performance is all seasons. (I live in Wisconsin.) Had the stock tires for the first year and they sucked in snow. Put the Goodyears on before winter this last year and could tell the difference the first snow. They ride a little rough but I figure the handling and traction you get from these tires is worth the ride. (This is from the carbon fiber reinforced side walls.) So give them a try....

 

 

 

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