Wheel Rim Offset Explained

g'day guys if you're looking at upgrading your rims and tires or your wheels and tires you gotta watch this space because I'm gonna reveal all the little issues that you are going to come across and once you know their problems I'm going to reveal how we fix the problems with rim offset or wheel offset so by the end of this video you're going to understand what rim offset actually is you're also going to understand how to fix your current issues you may have or issues you may come across when you fit bigger tires to avoid scrubbing to avoid contact with the upper control arm on your lifeís vehicles there's a lot here to cover I'm gonna do it as good as I can but at the end of this video you're also going to find out how to measure your rim offset difference so stay tuned first things first what is rim offset to start off I'm going to show you the zero offset rim that means that this is ground zero where you measure from this is a zero offset rim if you measure from edge to edge and then you divide that number you know into you'll find a centerline that is where it is right here so you can see it's pretty well central on this rim or wheel itself and we measure from the mounting plate this is where your offset is so this particular rim is a perfect example because it is a zero offset rim let's look at a positive so the positive offset rim as you can see it's a little bit further out that way and you can see here it's more noticeable on the mounting surface here and there he says right in that means that when you mount this wheel to your vehicle it'll sit further in rather than out now most vehicles stock are released with a positive offset of around 20 to about 12 plus most vehicles moving on this will show you the contrast when it comes to the positive versus negative offset as you can see here this is a negative offset Rim it's a negative fifty-five mill berry common on Land Cruisers this sits right in it's a deep dish also known as a deep dish I should say as you can see here here's a line you can see this way further out here and the mounting surface is right here so this would bring your wheel out towards the edge most vehicles this negative fifty-five would actually make your tire stick outside the guards we now know what will offset is we're now going to discuss why you would do it and there are many reasons why you would change to a zero a positive or a negative reasons why you would actually change your offset why would you well there's a number of reasons the number one reason is if you go for more of a negative offset that means you're pushing your wheels outputs and in turn you are creating a more stable vehicle if the stability increases on your vehicle by 1% or maybe a bit more who knows I'm not an engineer I haven't calculated it but it will definitely increase the stability of your vehicle because you're making wheel track water another reason why you would make your wheel track water is if you drive around in some rudder country now most vehicles have a similar wheel track so if you have a popular type of for drive like a Nissen patrol or land cruiser or just a popular vehicle in your region they will all have the similar wheel track so if you did go and you made your wheel track water about 50 mil you'll find that in the ruffed areas you're going to get more traction because if you have side-biting mud tires they only I got more contact with the edges and you're going to find more traction and you're gonna find it easier to drive through stuff so that is a good reason why they have a water offset but it does come at a price to the water you make your wheel track the more counter leverage you're putting on your axle and your bearings so if you carry a lot of weight and you've got a really wide wheel you're putting a lot more stress on your bearings and your axles and your driveline so keep that in mind - with the 70 series the rear wheel track is narrower than the front and just to quickly explain reason why that is it's because when I put the v8 in the front the v8 was too big cinematic front axle bigger but they never corrected the rear axle so here's another reason for a rim offset when I first bought this vehicle no one had made these replacement thiefs that corrects the problem so what I did was I used the negative 55 offset rim and I'll show you that rim shortly and that corrected my rear track because it brought it out and lined up with the front the other option a lot of people have resorted to is paying about 80 to 100 bucks for a wheel spacer if I add this wheel spacer to this zero offset rim I'm going to get the exact same result as just changing the rim to a negative 50 offset this sits on the mountain face and changes that by 50mm so what this is essentially doing is its pushing your tire 50mm further out this rim does the same thing without a spacer so Half Price and a lot more legal than what this is just go for a wider offset so that is a bloody good reason to go for an offset rim another reason for a wider wheel track is the stands on your vehicle apart from the stability have already covered the stance of your vehicle the street cred the bush cred it looks wider it looks awesome tires tucked right inside the guards don't really look like great so that's another reason why people go for a wider offset we have discussed all the cool things and how to push the limits of the legalities of your vehicle with a negative offset rim and also discuss how to correct a few things on certain vehicles we can our going to look at the positive offset why would you change them more of a positive offset well there are some really good reasons if your vehicle was released with like closer to a zero offset and you put bigger tires on it what happens here is when you put a bigger tire on your vehicle it increases the size of your tire inside the guard and outside the guard or towards the outside of the guard sometimes it'll stick outside the guard now to fix that you can use a different offset rim to bring it in or bring it out depending on what requirements you are after another reason for a positive offset rim is to change where the scrub is on a frontier vehicle so on a frontier vehicle that is generally where you're going to find difficulties with changing tire size and rim offset and that is when you are turning so here's a common point to have some problems with for instance contact on the inner guard contact at the top and last but not least contact on the front bulbar changing your tires making them bigger will impact on all these things now to fix this there are two ways you can do it either adjust the arches or even better try and adjust it with the rim first or sometimes it can even contact on your IFS vehicle all the topper components like your upper control arm if that's the case you're going to need to go for a negative offset to get it away from your upper control arm if it's not the upper control arm but it's contacting on the inside you may need a positive offset so you may have to do a bit of research on some forums perhaps people of the same vehicle as you if you're scrubbing somewhere you may be able to help it at least help it a bit with a different offset rim and that is the whole point of this video the offset of your wheels we rims can determine wherever your tires are going to scrub or not so again another good reason for a positive offset rim is to fit wider tires and keep them within the guards that is probably the most simple way of explaining a positive offset one other thing I mentioned here is if you do go too far with your offset generally speaking if you go if you change it more than 25 mil you're gonna encounter some corner rubbing issues especially on the front of vehicle especially on the newer vehicles as well there's not a lot of room these vehicles are not designed to have big tires on them and the manufacturer doesn't bear in mind that hey this owner may want to put a different offset on their tires that's not the case so if you go too big too wide and offset too narrow and offset something's going to change as you can see there are a lot of different reasons to have different offset rims another reason to have an offset rim is if you get a wider rim so you have 8 inch rims 9 inch rims 10 inch rims if you get a 10 inch rim and you normally run eights your rims are wider which puts it inside as well so you may need to change your offset to compensate for the rim sticking too far in or sticking too far out we've kind of covered a few of these already the legality thing is something to look out for if you change your offset too much the main thing to look out for we have a positive offset is what we already spoke about it is scrubbing on the upper control arms on IFS vehicles and we're scrubbing on the inner guard and the outer guard that's another thing negative offset rims what to look out for well we already covered the extra leverage and stress and the bearings because you've you've made the track wider now the whole purpose of this exercise is to show you what happens when you put a negative offset rim on to your hub and what happens to it till where your brake components everything they get exposed so here we have a zero offset now we're going to change it to a negative offset okay so on a solid axle vehicle live axle vehicle sticks and stuff can come in and possibly sever your ABS line your brake lines or whatever it's just a bit more vulnerable it's a very unlikely scenario but it does make it more vulnerable more importantly let's look at the IFS vehicle now I've only drawn a few bits of components you so you got your lower arm coming in there you've got your CV axle coming out here now something that does get exposed a lot more or a knife is vehicle and let's move the offset first we've got a wider wheel stands looking Mintos from the outside but on the inside this CV boot is compromised now also forcing water and stuff in but more importantly if the stick comes up it can easily do little slices into these rubber boots and CV boots your brake and ponents are again exposed or your little components or your little weaker bits on your wishbone suspension all of that stuff is now more exposed it's more likely to have foreign matter hitting it stone chips sticks forced water so I think you get the message there when you do change your offset to like quite a bit of a negative you're exposing those bits to the elements how to actually measure your rim offset and what we'll start with here is the positive offset because that's the most common one on some rims wheels it'll actually be stamped on it here or on the backside the rims I have in play don't have it stamped on there and many weights so that's why I'm teaching you how to measure the only really tools you need is a level and a tape measure when we measure the first measurement we're going to do is from the top so you've got a straight edge across here and you're going to measure to the unsigned underside up the level from the bottom and here we have 206 millimeters so 206 that number we need to divide by half so divided by 2 equals 1 0 3 so 103 is the equation we have now now we measure from the mounting surface remember what that was that was this bit down here we're putting the tape on the underside like that not like that like this so we hook the tape underneath the mounting surface and hold it up and here we have 86 milk so in other words 2:06 was the first equation divided by 2 equals 103 less 86 and we have 17 so this is a 17 millimeter positive offset let's go for the deep dish the deep boy same principle we're measuring we have 230 so we will remember that number we will then measure from the mounting surface which is right deep down in here right in here we have 170 millimeters 230 was the rim size divided by 2 equals 115 subtract 170 negative 55 that's how you find your offset I've shown you on 2 rims but just to give you another look here Z 0 offset rim yeah this is the easiest one to measure so 230 mil rim divide that by 1/2 is a 115 we measure from the offset 115 this is a zero offset rim you now know how to measure your rims if you want to know what's best out of aluminium and steel rims pros and cons video just down there see in the next video by

Channel: Ronny Dahl

Views: 836,111

Keywords: Off-road, tracks, 4wheeling, adventure, 4x4-off-road, Wheel Rim Offset Explained, wheel offset, wheel offset explained, rim offset, wheel rim offset explained, rim offset explained, wheel offset explained youtube, wheel offset spacers, wheel offset examples, wheel offset and backspacing explained, what is offset, what is wheel offset, negative offset, positive offset, aftermarket wheels, ronny dahl, 4 wheeling australia

Id: hb6JMtZpKcU

Length: 14min 47sec (887 seconds)

Published: Sat Feb 22 2020