My mother's car needs new tires. She owns a Galant 02 ES. The tires are 195 and I would like to put 205 on them. Will I have to change the rim? I'm clueless here. Someone lead me to the right direction.
Changing Tires
- Thread starter dannybek
- Start date
Demon-Xanth
Lifer
- Feb 15, 2000
- 20,551
- 2
- 81
its only a diff of 2 cm, but any tire shop should be ale to answer it over the phone. Why do you want 205s?
The 195 is the width of the tire in millimeters. So the 205 size tire is 10 mm wider. I'm sure the current wheels should accomodate the slight increase in width just fine.
over and over again, always use http://www.miata.net/garage/tirecalc.html i suggest when you increase the width of the tire go down one size in the diameter, but it depends
ie on my car stock is 185/65/14 i use 195/60/14 therefore the speed is off less.
ie on my car stock is 185/65/14 i use 195/60/14 therefore the speed is off less.
PricklyPete
Lifer
- Sep 17, 2002
- 14,582
- 162
- 106
Not if the sidewall height is the same.
Tire size is specified as follows:
205/55/15
205 - 205mm tire width
55 - sidewall height is 55% of the tire width
15 - 15in wheel diameter
Speed is determined on a log scale, so your spedometer will be off more the faster you are going. Still not by much if you go from, e.g. 195/65/14 to 205/60/14. The wheel should accomodate a fatter tire, but it may not be as safe or cause wear on the tire.
what do you mean on a log scale? I thought it (the speedometer) measured the RPMs of the wheel. Assuming a factory tire size you would go a specific distance (the circumference of the tire) per RPM, thus your speed (d/t). I am curious about this relationship and hether or not I have it wrong because I put larger tires on my truck and have been thinking I was off by a constant % regardless of my speed.
Correct me?
Correct me?
DivideBYZero
Lifer
- May 18, 2001
- 24,117
- 2
- 0
not because of the width, but because you cant easily get an exact same sidewall height even if you go down a size. A 195/65 would have a sidewall height of 125.75 mm while a 205/ 60 would have a 123 mm sidewall. A 205/65 would have a sidewall height of 133.25 mm, No exact match is possible in this case.
DivideBYZero
Lifer
- May 18, 2001
- 24,117
- 2
- 0
I know that but as others have said you use a lower profile tyre. As Speedo's are not acurate anyway it's hardly a big sh1t, is it?
DivideBYZero
Lifer
- May 18, 2001
- 24,117
- 2
- 0
Originally posted by: NutBucket
Not really. It should be labeled "approximate" speed
"Yes Officer, I was travelling at approximately 65 mph"
Agreed!
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