Tyre Sizes & Wheel Offset - Variance Calculators

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Peter Aawen
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Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Peter Aawen » December 19th, 2010, 5:06 pm

Link for a Tyre Size Calculator,

http://www.1010tires.com/TireSizeCalculator.asp

and

Wheel offset Calculator
http://www.1010tires.com/wheeloffsetcalculator.asp

If you have any other similar links to post up, please do; but this isn't a thread for arguing about which is best or if any of them are exactly correct or not, it is intended to give readers a consolidated range of tools & options to choose from in order to find out HOW to determine tyre sizes and offsets from sources OTHER than reading thru the many threads that discuss these subjects on the Forum. ;)
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medion
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by medion » January 11th, 2011, 8:55 pm


Les Addison
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Les Addison » January 14th, 2011, 8:03 am


Captain Cupcake
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Captain Cupcake » July 2nd, 2011, 4:32 pm

Here are some more sites to try for different tyre size comparisons.

http://www.carbibles.com/tyre_size_calculators.html" onclick="window.open(this.href);return false;
http://www.bhclrc.org.uk/calc.htm" onclick="window.open(this.href);return false;
http://www.carbibles.com/tyre_bible.html#sizes" onclick="window.open(this.href);return false;
http://www.kouki.co.uk/utilities/visual" onclick="window.open(this.href);return false; ... calculator
http://dolcewheels.com/wheel_Making.html

Now, Does anybody know what the equivalent size tyre would be for either a 7.00 R 16 or 205 R 16 ?

stretch4x4
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by stretch4x4 » July 2nd, 2011, 5:13 pm

Another simple one:
http://www.voxwheels.com/" onclick="window.open(this.href);return false;

Although not sure about those two you posted Cupcake..
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whizzo
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by whizzo » December 26th, 2012, 2:45 pm

tyre size calculators may be all fine and beaut for a quick guide, but they can not be relied upon.....most of the time they will be spot on....but very offten they can be way off..and they hold no water legally.

If it realy matters...like you are tyring to select a tyre and be on the right side of the law...just......there is one source that can be relied upon.

The Tyre and Rim Association of Australia- Standards Manual.

Available from the assocaiation for arround $50 posted while that years printing lasts.

This is what any legal position or opinion will be bassed on.

All reputable tyre shops should have one.

If you get hold of one, be sure to read the notes and fine print and make sure you have the correct tyre and catagory......seemingly slight variations in the tyre designation may mean significant differences in figures listed.

The only other relable source is certified manufacturers data.

cheers

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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by monkeybucket » February 10th, 2013, 7:33 pm

I have noticed that a lot of people ask this question...What is PCD and Offset.

Well here is a page full of useful info.

http://www.gomog.com/allmorgan/wheeloffset.html
Cheers
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mydmax
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by mydmax » February 10th, 2013, 8:44 pm

G'day Peter
I had a look at the wheel offset calculator.
While it does indicate what is likely to occur with the tread of the wheel most people are wanting to know what that means at the edge of the tyres.
Because the edge of the tyre is pushed out with wider rims and less offset, the amount is pronounced as the wheel effectively moves forward and backwards more as it is turned.
It seems many unwary modifiers and also tyre fitters find out too late and have fitted the tyre to the rim before ever thinking about the overall dynamic effects happening there.

A simple cardboard profile of the of the additional distances involved would help answer many questions if:
The profile of the current tyre was cut as a sort of half moon.
a. Old tyre profile on the underside. ie, under side of moon
b. New wider or higher tyre profile cut on the outside. ie, top side of moon
c. Rim offset and relative centre of tread (From using wheel calculator info or personal calculations) is applied to the positions of the outer and inner profiles.

Use card to move around old size tyre so the steering and compressed suspension clearances can be fairly closely observed.
Can be used on both front and back tyres.

Much cheaper than buying something which isn't what was wanted.

No tyre company has come up with a REAL calculator of such things as far as I have seen. It only tells you the tyre size and or the wheel offset. Still no help for clearance issues at all.

THEN decide on tyre size/profile. At present everyone asks everyone else "wot fits".
Back to kinder kids, and start cutting cardboard once more!

Warning. This idea will make sense to some and be gobbledy gook to others.

Regards
mydmax
Last edited by mydmax on March 17th, 2013, 1:40 pm, edited 1 time in total.

pbk1776
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4x4 Tyres and Wheels Calculator

Unread post by pbk1776 » March 14th, 2013, 10:22 am

Hi All

I noticed a lot of people asking of Tyre Sizes from mm to inches - will it fit, how is it going to look like and how much height difference it will give.

I stumbled on this online calculator in UK and not sure if everyone is aware of it - however I thought about of sharing it to everyone so they can do calculation themselves without repetitive threads popping up

here is the link very handy and it gives visual difference of tyre sizes from original vs to the one you aiming to get

http://www.4x4tyres.co.uk/4x4_tyre_size_tool.php

hope this benefit everyone from this forum

BR
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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Captain Cupcake » March 15th, 2013, 10:58 pm

Just found this site which has a converter for Truck tyres to Metric:
http://www.etyrestore.com.au/tyre_calculator.php

Covers the old question of what size 205R16 are in metric & imperial

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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Peter Aawen » March 17th, 2013, 1:13 pm

Please re-read the first post before posting anything other than a link to a tyre size or offset calculator, or providing straight forward info on how to work that out or access the appropriate info - there are a couple of examples already in the thread. Any other posts that are NOT providing links or simply posting helpful & straight forward info on HOW to work these things out will be deleted. This one is not meant as a discussion thread, it is meant to be an index of tools for people to use. ;)
An Ex-Service person is someone who thought enough about their country & how great it is, how lucky we are to live here, to write a blank cheque made out to 'The People and Commonwealth of Australia' for the value of 'Up to & including my Life!'

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Re: Tyre Sizes & Wheel Offset - Variance Calculators

Unread post by Hilux_Ryan » April 10th, 2013, 8:47 pm

Just adding this here http://www.rimsntires.com/specs.jsp

I use that pone to compare stuff, only real drawback is that it only accepts metric tyre sizes, although it gives dimensions in mm and inches. but it gives you an indication of whee the differences are, and by assuming a 31x10.50R15 is actually 10.5 wide and 31 tall, closest I could input with metric is 265/75R15 which is 10.4 wide and 30.7 I think tall.
My cruiser thread viewtopic.php?f=22&t=145966

ColoradoinOz
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Tyre size & rim offset calculators = pics with specs!

Unread post by ColoradoinOz » May 31st, 2015, 6:24 pm

For those that are not sure how wheel offsets etc work or those looking at fitting the biggest tyres possible I have found some good sites for calculating tyre size & offsets etc

This one shows the tire size & wheel offset etc comparison very well with all the dimensions listed>
http://www.willtheyfit.com/index.php?wi ... 25#content

This one shows wheel offset & clearance to guard & suspension etc also with lots of detail>
http://www.wheel-size.com/calc/?wheel1= ... m&scl=50mm

Can someone post in the Colorado "Got or Want Bigger Wheels - Come in Here" thread the measurements (wheelwell & fender clearance) for a stock & or lifted RG guard to wheel clearance with the stock wheels or bigger wheels, This would be a good base to view to get an idea of width of tyres & rims (& offsets) that will work

A good way to sort out the largest tyres that will fit with & without lift or simply put some specs with the pics we see in here like those running 0 offset wheels etc

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