Wagon R 2006 Model Tyre Size
Giorgina Makara
There is not a single standard for bicycle rim width, and they do vary. Rims intended for a wider tire, like mountain bike specific rims, will be wider than those intended for narrower road tires. They can range anywhere from an internal rim width of 13mm up to around 29mm.
That depends on the width of the rim. If you remove the tire and measure the internal rim width, you can determine the minimum and maximum tire sizes it can support. If you want to go down to a 25mm tire for example, your rim would need to be no wider than 18 or 19mm on the inside. With a 28mm tire, you could get away with a 20mm or 21mm internal rim width.
Should add there are 2 sizes of 20 inch, in the article you said 406, but in the comments you mentioned 451. It is a souce of confusion because sometimes you say 20 inch and wanted 451 but got the 406 instea and vice versa.
That said, considerably smaller frames often require a smaller wheel size in order to maintain their geometry. This is why kids bikes typically use smaller wheels, and some small adult road bikes will use 650b wheels instead of 700c.
I bought a paratrooper express mainly for its folding capacity but I mainly ride on roads and find it a much harder ride than my non folding hybrid so have only used a handful of times in 3 years. Would I be able to put hybrid tyres on this bike and if so please could you advice what tyre i should buy and wheels too if I need them as well (i am not bike technical savvy so as basic and instructive as possible please)
Hi,
When you say a rim has a diameter of iso622, is that the total diameter of the rim or is it the diameter of the bead seat?
Thanks for your wheel size article by the way. It has been very helpful.
The bike frame would have been designed for a specific wheel size and switching to smaller wheels can present problems. Smaller wheels would lower the bike to the ground making it easier to mount/dismount, BUT it would also lower the crank and pedals toward the ground significantly. You would likely experience pedal strike (the pedal hitting the ground at the bottom of the rotation) especially when cornering. In addition, if the bike uses rim brakes, those brakes would likely no longer reach the rim since the smaller diameter wheel would be farther away from the brake mounts. Your best bet is likely to get a new bike with a smaller frame or a step-through frame design.
Installing the right tires on your vehicle is essential to the overall performance and safety of your vehicle. Your tire choice should reflect the conditions in which you drive and your preferences for vehicle response and handling. To make the most informed decision, though, you must understand how to read tire size when it's time to buy tires.
Thankfully, determining the correct tire size for your vehicle is relatively simple. All the information you need is immediately available either in your owner's manual or somewhere on the vehicle itself. Already know how to read tire size numbers? Skip the explanation and find the right Bridgestone tire for your vehicle online or by visiting a Bridgestone tire dealer near you.
While actual, physical measurements like width and diameter are factors in finding the right tire size, there are additional details to consider. Knowing how to read car tire sizes also means understanding terms like load index and speed rating that affect your vehicle's overall capabilities.
For most vehicles, you'll see the letter "P" before the number sequence begins: P225/70R16 91S. The "P" is short for "P-metric," which is a designation by the Tire and Rim Association for a "passenger car" tire type. A "P" signifies the tire was designed to primarily be used on passenger vehicles, which can include cars, minivans, SUV's and other light-duty pickup trucks.
Similarly, "T" stands for "temporary" and is for your spare tire. If you see "ST," that means "special trailer." A special trailer tire is never installed on the drive or steer wheels. It's only intended for use on trailer axles.
After the slash mark, the next number you see is for the tire's aspect ratio, which essentially tells you how tall your tire's profile is: P225/70R16 91S. Aspect ratios are delivered in percentages. Tire makers calculate the aspect ratio by dividing a tire's sidewall height by its width. If a tire has an aspect ratio of 70, it means the tire's height is 70% of its width.
"Bias-ply" tires were used on automobiles and light trucks until the '70s," reports the classic car site, Hemmings. But radial tires represent the vast majority of tires on the road in the United States today. In fact, you will almost always see the letter "R" on tires as radial tires have been the industry standard for over 40 years. Radial construction means the tire's internal ply cords are oriented in a radial direction (at 90 degrees to the centerline of the tread).
Take note: if you decide to change your rims' size, you will also need to get new tires that are compatible with the change in size. Tires designed to fit a 16-inch wheel diameter will not stretch to fit on new 18-inch rims.
It is called the load "index" because the figure doesn't tell us the precise number of pounds the tire can support, at least not by itself. Instead, the number corresponds to a specific load capacity listed in an index. Beginning with one and ending with 150, numbers in the load index represent carrying capacities of 99 to 7385 lbs.
Additionally, you may not find this number present on all tires. This is because the load index is not required by law to be printed on tires. If there is no load index measurement on your tires, check the owner's manual or contact your local Bridgestone tire dealer for more information.
The final figure in a tire size sequence is the speed rating indicated by a letter: P225/70R16 91S. Just as your load index number corresponds to a particular load, your speed rating letter corresponds to a specific speed capability based on a standardized laboratory test.
For example, a tire with a speed rating "S" is rated for up to 112 mph, while a tire rated "R" is up to 106 mph. Remember that this isn't a recommended cruising speed, but rather the maximum speed that tire type can withstand. Of course, you should always follow legal speed limits on roadways.
Tires with higher speed ratings tend to offer increased handling performance. Replacement tires must have the same or higher speed rating to maintain vehicle speed capability. If a vehicle has tires with different speed ratings, the speed rating of the "slowest" tire dictates the vehicle's top speed.
Like the load index, the speed rating is not required by law to be listed on all tires. If your tires do not have the speed rating listed, your owner's manual will have the relevant information for your model's stock tire type.
You may find "M+S" or "M/S" after the main tire size sequence on some tires. This indicates that the tire has some capacity to handle snow and mud conditions. This indication is common on most radial or "R" type tires.
You may notice another set of letters and numbers on your tire's sidewall beginning with "DOT." This is not an indication of tire size, but rather that the tire complies with Federal Motor Vehicle Safety Standards. The "DOT" stands for Department of Transportation and is followed by the tire identification number.
The first two letters or numbers after DOT refer to the manufacturing plant where the tire was produced and the last four numbers indicate the week and year the tire was made. The numbers 4318, for instance, indicate that the tire was manufactured during the 43rd week of 2018.
While it's certainly possible to upgrade your tires' size, it's usually best to stick to your manufacturer-recommended tire size for optimal performance. Increasing the size of your tires may give your car more ground clearance, but it may also affect handling, drivetrain performance and fuel economy. Keep in mind the changes to key figures mentioned above, such as load index and speed rating, and how they may affect your vehicle's capabilities if you decide to increase tire size.
Once you know how to read the numbers on tires, you can explore tires by size and narrow down your tire options quickly. Compare tire sizes online or visit a Bridgestone tire dealer near you for help.
This Lexus tyre pressure and size guide answers an important factor that has a direct bearing on everything from safety and ride comfort to fuel economy and responsiveness. Different wheel and tyre combinations require different tyre pressures, and these can sometimes alter between the front and rear of the vehicle.
As the only direct connection to the road surface, the tyres of our cars deserve special attention. They should be in damage-free condition and wearing evenly across the breadth of the tyre and around the entire circumference, to a minimum legal tread depth of 1.6 millimetres.
Specific tyre sizes and inflation values are not mandated by law but set by each vehicle manufacturer. The tyre sizes specified from the factory and the pressures that Lexus recommends to inflate them will offer the best possible balance in overall performance in normal road conditions with a modest load on board. You will find this information for all current generation models in the table below.
Hello , i recently had a NX 300h fsport, the tyres are 225-60-R18 , Reg 2016. I checked the tyre pressure at the petrol because the tyre pressure sign was showing at the dashboard, it is actually 48psi, is that ok or need to be reduced for that sign to go off the dashboard?
Having referred to the owner manual for your year of NX, based on the wheel size provided, your cold tyre pressures should be 2.2bar (32psi) for both front and rear if driving below 100mph. Please adjust the pressures as soon as is possible.
Our wheel fitment chart for Mercedes Benz vehicles lists the majority of Mercedes' past and present vehicle range against the wheels and tyres that will fit each model, and their offsets. We have attempted to compile as comprehensive a model list as possible, if however your vehicle is missing from our chart or you need additional help, please contact our technical department who will be happy to offer free advice and support.