need some help...
October-5th-2002, 09:38 PM
#1
huh?
Thread Starter
Join Date: Jun 2002
Location: Caracas,Venezuela
Posts: 871
need some help...
I don't know squat about tires/wheels, wich of these numbers determines the diameter of my wheel/tire? mine is suposedly:
Rim: 14 x 5.5 JJ.
Tire: 185/65 radial 14.
how "big" is that compared to the one on the P5? I asking cuz I think my wheels look kinda tiny (not just the rim, but the whole thing)
Rim: 14 x 5.5 JJ.
Tire: 185/65 radial 14.
how "big" is that compared to the one on the P5? I asking cuz I think my wheels look kinda tiny (not just the rim, but the whole thing)
October-5th-2002, 10:35 PM
#3
huh?
Thread Starter
Join Date: Jun 2002
Location: Caracas,Venezuela
Posts: 871
ok, so it's not the rim that makes it look smaller, it actually is smaller. what happens if I get bigger wheel/tire combo? is there any way to "fix" the speedometer(is that the correct term) to make it display the correct speed? cuz I know that changing the size of the wheel/tire will alter it's accuracy.
October-5th-2002, 10:46 PM
#4
Protege Enthusiast
Join Date: Aug 2002
Location: Alabama
Posts: 270
Hey dude, I did some quick searching for you, and I found that your 186/65/14 is almost the exact same overall diameter as the 195/50/16s' on the new P5s'......23.5 inches. Even though your rims are 2 inches smaller, the lower profile on the 16 inch 195/50s' makes up the difference. So, too answer your question( and anyone else correct me if I am wrong), you could put some new P5 16s' on your car, and your spedometer would never know. Hope this helps..Later on
http://photos.yahoo.com/slamprotege5:)
http://photos.yahoo.com/slamprotege5:)
October-5th-2002, 11:41 PM
#5
huh?
Thread Starter
Join Date: Jun 2002
Location: Caracas,Venezuela
Posts: 871
Originally posted by slamprotege5
Hey dude, I did some quick searching for you, and I found that your 186/65/14 is almost the exact same overall diameter as the 195/50/16s' on the new P5s'......23.5 inches. Even though your rims are 2 inches smaller, the lower profile on the 16 inch 195/50s' makes up the difference. So, too answer your question( and anyone else correct me if I am wrong), you could put some new P5 16s' on your car, and your spedometer would never know. Hope this helps..Later on
http://photos.yahoo.com/slamprotege5:)
Hey dude, I did some quick searching for you, and I found that your 186/65/14 is almost the exact same overall diameter as the 195/50/16s' on the new P5s'......23.5 inches. Even though your rims are 2 inches smaller, the lower profile on the 16 inch 195/50s' makes up the difference. So, too answer your question( and anyone else correct me if I am wrong), you could put some new P5 16s' on your car, and your spedometer would never know. Hope this helps..Later on
http://photos.yahoo.com/slamprotege5:)
thanx again, you've been really helpful
PS: Damn your car is low!
October-6th-2002, 08:12 AM
#7
Protege Enthusiast
Join Date: Sep 2002
Location: Austin, Tx
Posts: 67
Brain Sqeeze....
Here's what all the numbers mean and how to calculate your tire's actual dimensions from the markings on the sidewall. Put on your thinking caps!
185/65/14 = 185mm section width (thats the widest point on the side wall) / 65% profile (the sidewall is 65% as high as the section width is wide, i.e. 65% of 185mm or 120.25mm) / 14inch rim diameter.
To figure the tires dimensions:
185mm = 7.28 in. (185 divided by 25.4) so it's 7.28" wide
65% of 185mm = 120.25mm or 4.73 in. high sidewall
on 14 in. rim.
Overall diameter = 23.46 in. or: rim (14") + sidewall x 2, top & bottom (9.46 in.) Subtract a quarter to half an inch for the squish of the contact patch to see how high the tire is loaded if you like. You can apply this to any tire specs to see what you are getting and save the trouble of trying to look it up. Remember that the section width can be changed slightly by mounting it on a rim that is notably wider or narrower than that which the tire was designed for.
Look carefully at the extra space remaining around you existing tire to decide how much larger (wider) tire you can run, keeping in mind that a signifigab=nt change in tire diameter will mess with your speedo. (larger = slower, smaller = faster readings than actual)
Thinking Caps Off!
Have fun.
185/65/14 = 185mm section width (thats the widest point on the side wall) / 65% profile (the sidewall is 65% as high as the section width is wide, i.e. 65% of 185mm or 120.25mm) / 14inch rim diameter.
To figure the tires dimensions:
185mm = 7.28 in. (185 divided by 25.4) so it's 7.28" wide
65% of 185mm = 120.25mm or 4.73 in. high sidewall
on 14 in. rim.
Overall diameter = 23.46 in. or: rim (14") + sidewall x 2, top & bottom (9.46 in.) Subtract a quarter to half an inch for the squish of the contact patch to see how high the tire is loaded if you like. You can apply this to any tire specs to see what you are getting and save the trouble of trying to look it up. Remember that the section width can be changed slightly by mounting it on a rim that is notably wider or narrower than that which the tire was designed for.
Look carefully at the extra space remaining around you existing tire to decide how much larger (wider) tire you can run, keeping in mind that a signifigab=nt change in tire diameter will mess with your speedo. (larger = slower, smaller = faster readings than actual)
Thinking Caps Off!
Have fun.
October-6th-2002, 12:23 PM
#8
huh?
Thread Starter
Join Date: Jun 2002
Location: Caracas,Venezuela
Posts: 871
Re: Brain Sqeeze....
Originally posted by stealthscotty
Here's what all the numbers mean and how to calculate your tire's actual dimensions from the markings on the sidewall. Put on your thinking caps!
185/65/14 = 185mm section width (thats the widest point on the side wall) / 65% profile (the sidewall is 65% as high as the section width is wide, i.e. 65% of 185mm or 120.25mm) / 14inch rim diameter.
To figure the tires dimensions:
185mm = 7.28 in. (185 divided by 25.4) so it's 7.28" wide
65% of 185mm = 120.25mm or 4.73 in. high sidewall
on 14 in. rim.
Overall diameter = 23.46 in. or: rim (14") + sidewall x 2, top & bottom (9.46 in.) Subtract a quarter to half an inch for the squish of the contact patch to see how high the tire is loaded if you like. You can apply this to any tire specs to see what you are getting and save the trouble of trying to look it up. Remember that the section width can be changed slightly by mounting it on a rim that is notably wider or narrower than that which the tire was designed for.
Look carefully at the extra space remaining around you existing tire to decide how much larger (wider) tire you can run, keeping in mind that a signifigab=nt change in tire diameter will mess with your speedo. (larger = slower, smaller = faster readings than actual)
Thinking Caps Off!
Have fun.
Here's what all the numbers mean and how to calculate your tire's actual dimensions from the markings on the sidewall. Put on your thinking caps!
185/65/14 = 185mm section width (thats the widest point on the side wall) / 65% profile (the sidewall is 65% as high as the section width is wide, i.e. 65% of 185mm or 120.25mm) / 14inch rim diameter.
To figure the tires dimensions:
185mm = 7.28 in. (185 divided by 25.4) so it's 7.28" wide
65% of 185mm = 120.25mm or 4.73 in. high sidewall
on 14 in. rim.
Overall diameter = 23.46 in. or: rim (14") + sidewall x 2, top & bottom (9.46 in.) Subtract a quarter to half an inch for the squish of the contact patch to see how high the tire is loaded if you like. You can apply this to any tire specs to see what you are getting and save the trouble of trying to look it up. Remember that the section width can be changed slightly by mounting it on a rim that is notably wider or narrower than that which the tire was designed for.
Look carefully at the extra space remaining around you existing tire to decide how much larger (wider) tire you can run, keeping in mind that a signifigab=nt change in tire diameter will mess with your speedo. (larger = slower, smaller = faster readings than actual)
Thinking Caps Off!
Have fun.