young_dubya
Well-known member
Ive been wading through though internet the last couple of nights trying to establish what tyres to run on my bus based on
A) how cool they will look (Sidewall heights) Obviously THEE most important factor :lol:
B) The load rating- Important to me as my bus is my daily so i want something that at least covers the max weight the bus can carry.
Just thought id share some useful links and calculations (please bear with me as ive tryed to make it as simple as possible as ive confused myself a few times :lol: ) ive been using to establish the above.
First up is the continental sites tyre Search
http://www.conti-tyrefinder.co.uk/index.php" onclick="window.open(this.href);return false;
I basically had a look through the stance thread on here (http://forum.earlybay.com/viewtopic.php?f=4&t=7365" onclick="window.open(this.href);return false for a front set of tyres i thought i liked and entered the details into here to get the load rating of said tyre. It doesnt cover all sizes of tyre but will give you a good idea.
Then i used this site to find what the load ratings meant
http://www.tyresave.co.uk/tyreload.html" onclick="window.open(this.href);return false;
This helped me find tyres that will cover at LEAST the load that the front beam on my bus will be rated at.
Now for the tricky bit (and most likely the bit ill get wrong :lol: ) the carol vorderman bit
Sidewall depth/height.
Side wall height/depth can be calculated quite easily by using the tyre markings
For example take a 165/65 R15 81V tyre. The 165/65 is the part you need to establish your sidewall height.
165 is the width of the tyre and the 65 means the sidewall of the tyre is 65% of the tyres total width.
SO! 165 divided by 100 gives you 1% of the tyre width which in this case is 1.65mm
So the 1.65mm x 65= 107.25mm
Therefore! The sidewall depth on a 165/65 R15 is 107.25mm!!
Wheel sizes Inches to mm
If anybody has been viewing the "Slammed earlies" thread has seen the measure ments then this (with the above) Is used to establish overall wheel/tyre height. I have to say that there are probably easier ways but thia is the one i used :lol: :lol: .
Basically 1" is 25.4mm
So your 15" alloy wheel in mm is calculated 15x 25.4= 381mm
If you double your sidewall thickness (if you intend to run a tyre all the way around your rim :lol: ) and add it to this you will achieve your wheel/tyre height fromt he floor for example
A 15" Radar wheel running on a 165/65 R15 81V tyre will be a total height of
107.25 x 2 + 381 = 595.5mm or 60cm (ish).
(Sidewall depth x2) + wheel diameter = wheel tyre height.
I know with some folk im teaching my granny to suck eggs but i hope this thread is useful to some people. Some folk get tyres others dont. Im not tyre expert just hadnt seen anything like this on here and thought it may come in handy. I hold no responsability for yours or anybody elses cock ups from info on here :lol:
If anybody can put me straight on anything or knows a simpler way (i know it will be done with grace and etiquet unlike other forums :lol: ) Please let me know and ill try my best to ammend the thread.
Cheers dudes! May your searchs be fruitful and your breakdowns easy to fix! :mrgreen:
Ash
Other useful info has been added further along in the thread such as:
Baywindow Overall weights and axle weights
Speedo/new tyre calculations
Gearbox ratios
Info on various tyres load ratings
Theres also some info about a dude who can whitewall them for you but i cant for the life of me remember his name??? :lol:
A) how cool they will look (Sidewall heights) Obviously THEE most important factor :lol:
B) The load rating- Important to me as my bus is my daily so i want something that at least covers the max weight the bus can carry.
Just thought id share some useful links and calculations (please bear with me as ive tryed to make it as simple as possible as ive confused myself a few times :lol: ) ive been using to establish the above.
First up is the continental sites tyre Search
http://www.conti-tyrefinder.co.uk/index.php" onclick="window.open(this.href);return false;
I basically had a look through the stance thread on here (http://forum.earlybay.com/viewtopic.php?f=4&t=7365" onclick="window.open(this.href);return false for a front set of tyres i thought i liked and entered the details into here to get the load rating of said tyre. It doesnt cover all sizes of tyre but will give you a good idea.
Then i used this site to find what the load ratings meant
http://www.tyresave.co.uk/tyreload.html" onclick="window.open(this.href);return false;
This helped me find tyres that will cover at LEAST the load that the front beam on my bus will be rated at.
Now for the tricky bit (and most likely the bit ill get wrong :lol: ) the carol vorderman bit
Sidewall depth/height.
Side wall height/depth can be calculated quite easily by using the tyre markings
For example take a 165/65 R15 81V tyre. The 165/65 is the part you need to establish your sidewall height.
165 is the width of the tyre and the 65 means the sidewall of the tyre is 65% of the tyres total width.
SO! 165 divided by 100 gives you 1% of the tyre width which in this case is 1.65mm
So the 1.65mm x 65= 107.25mm
Therefore! The sidewall depth on a 165/65 R15 is 107.25mm!!
Wheel sizes Inches to mm
If anybody has been viewing the "Slammed earlies" thread has seen the measure ments then this (with the above) Is used to establish overall wheel/tyre height. I have to say that there are probably easier ways but thia is the one i used :lol: :lol: .
Basically 1" is 25.4mm
So your 15" alloy wheel in mm is calculated 15x 25.4= 381mm
If you double your sidewall thickness (if you intend to run a tyre all the way around your rim :lol: ) and add it to this you will achieve your wheel/tyre height fromt he floor for example
A 15" Radar wheel running on a 165/65 R15 81V tyre will be a total height of
107.25 x 2 + 381 = 595.5mm or 60cm (ish).
(Sidewall depth x2) + wheel diameter = wheel tyre height.
I know with some folk im teaching my granny to suck eggs but i hope this thread is useful to some people. Some folk get tyres others dont. Im not tyre expert just hadnt seen anything like this on here and thought it may come in handy. I hold no responsability for yours or anybody elses cock ups from info on here :lol:
If anybody can put me straight on anything or knows a simpler way (i know it will be done with grace and etiquet unlike other forums :lol: ) Please let me know and ill try my best to ammend the thread.
Cheers dudes! May your searchs be fruitful and your breakdowns easy to fix! :mrgreen:
Ash
Other useful info has been added further along in the thread such as:
Baywindow Overall weights and axle weights
Speedo/new tyre calculations
Gearbox ratios
Info on various tyres load ratings
Theres also some info about a dude who can whitewall them for you but i cant for the life of me remember his name??? :lol: