Q&A for How to Determine Tire Size

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What is the difference between 185/14 and 195/14?

Community Answer

The larger number just represents the distance from bead to bead, so 195/14 would be slightly larger.

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Question

What's the tire size for 1998 Dodge Neon?

Community Answer

Check the driver's side door. There should be a label there indicating the correct tire pressure and tire sizes. You can also check on the sidewall of the actual tires you have on the car now, it should be clearly printed on the side.

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Question

If my vehicle was factory-equipped with 255/55 R18 tires, can I change to 265/55 R18 if I change all four tires?

Logic Johnson Lafontaine

Top Answerer

Can you just swap them? No. You'll need new wheels to put them on because the new tires will have slightly bigger sidewalls. You also need to be sure the factory tires aren't max size, because the new ones are 10 mm wider.

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Question

What size tire replaces a B78-13?

Nicholas Ivey

Community Answer

Most times, it's 175/80/13 for a vehicle (car) either Lt or P, or any vehicle.

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Question

Temporary tires are slim and lower in height, using it with other three higher tires, will it not affect chassis or vehicle body?

Nicholas Ivey

Community Answer

Depending on the tire size for a passenger vehicle or light truck vehicle and the weight (pounds) of your car, wide tires on a light vehicle=lower psi. Skinny tires on a heavy vehicle=higher psi.

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Question

What size tire can I replace my 215/65r 17s with?

Nicholas Ivey

Community Answer

That is not a tire size for a vehicle (car), so it's impossible to replace the tires.

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Question

I need to replace 4 Continental P 215/50 R17 91H tires for a 2015 Ford Focus 5-door. I'd like to go to a wider tire, perhaps 225 or wider. Rims are 7". Can I do that w/o going to 18" wheels?

Nicholas Ivey

Community Answer

If there is enough clearance for the wider tires on your car, yes, it will fit on your vehicle.

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What does the tt in 12.00R20-20PR TT mean?

Nicholas Ivey

Community Answer

TT = transit time of your tires for your vehicle (car).

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Question

I have a 5 lug 215/70R15 1968 Dodge sportsman and want to trade out the tires. What can I use to fit?

Nicholas Ivey

Community Answer

You can't trade out the tires. You have to buy the same stock of manufactured tires.

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Question

Trying to buy spare tire cover for Goodyear 235/65/17. What size do I need?

Nicholas Ivey

Community Answer

There are two options. 235/65 R17 and 245/65 R17. Original equipment tire was probably a Goodyear.

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Question

I have 255 60 15, can I swap for 245 60 15?

Nicholas Ivey

Community Answer

The correct optional size tires would be 245/60-15 rear and front sized tires.

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Question

What size donut spare for a 2014 Dodge Grand Caravan?

Nicholas Ivey

Community Answer

The 2014 Dodge Grand-Caravan has a V6 engine, so 225/65/R17 sized tires are what you need.

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Question

My tires are 275/60 r20, Can I change to 275/65 r20 or 275/70 r20 tire?

Nicholas Ivey

Community Answer

Yes, if your car or truck fender fits your tires, you can change to new tires.

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Question

Where do I find the diameter of the tyre?

Nicholas Ivey

Community Answer

It's possible to tell the diameter of the tire. It's the size of the tire for your vehicle (car).

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Question

What is equal to 255/60/15 in height?

Nicholas Ivey

Community Answer

The height = 255/17 = 15 units of measurement on a tire for the height of the tire for your vehicle (car).

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Question

My all season tires are 205/55R/16 94H. My friend has winter tires 205/60R/16 92S. Would they fit on a 2016 Kia Forte5?

Nicholas Ivey

Community Answer

You can but your speedometer will be off. The 205/50-16 has a diameter of 24.1 " and the 205/55-16 has a diameter of 24.9". That is a difference of .8". I suggest you stick with the OEM size. Click the link to see what effect different sizes will have.

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Question

What size tyre for Yezdi Roadking bike? Existing tyre size is 3.25-R16

Nicholas Ivey

Community Answer

For the size, look on the wall of the tire - you should have a figure such as 185/55 R16 81H. This will be your tire size. There will also be a brand and model of tire, for example, Dunlop (the brand) sp2000 (the model of the tire).

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Question

140/70-17 M/C 66H, what does it mean by M/C 66H?

Nicholas Ivey

Community Answer

It means M/C = Motorcycle Tire which, means 66 (669 lbs) H (130 mph) is your motorcycle tire.

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Question

My original tire size is 215/60R/16. Is it possible to install 215/65R/16 instead of original size?

Nicholas Ivey

Community Answer

No, because 60% is the length of the tire, 65% is too much. So, keep the original tire size.

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Question

Can I use 155/R13 LT 90/89 to replace 155/65R13 /73S?

Nicholas Ivey

Community Answer

155 width /80 aspect ratio/radial size13 for tires if you have a light truck.

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Question

My tire says M-5 after 245 40R18, what does M - 5 rating mean?

Nicholas Ivey

Community Answer

108=the load rating per tire is 2205 lbs S=the speed rating on this tire is 112 mph.

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Question

What tire will fit this wheel? 16x7.0 +42 mm offset.

Nicholas Ivey

Community Answer

You can fit up to a 26X10 305/35/26 tire with a 25mm offset wheel for your 2008 Chevy Tahoe.

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Question

Is a 255 wider than a 265?

Nicholas Ivey

Community Answer

There is a lot of difference. The 265/75-16 is 5.03% 1.59" larger in overall diameter than the 255/70-16 and is a narrower tire. These 2 sizes are not interchangeable.

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Question

Can I put 33'' /20''' on a 2012 ram 1500 4x4?

Nicholas Ivey

Community Answer

It is not likely that a 16 inch wheel would fit over the front caliper.

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Question

Can I use 205/65 R 15 to replace 195/65 R15?

Community Answer

In your case, it appears that those tire sizes are very nearly compatible, although 195/65 R 15 is a shorter tire than 205/65 R 15 and will negatively impact fuel economy (more tire and engine revolutions to get from A to B) along with potentially changing speedometer readings.

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