Does changing the size of your tire mess up your speedometer reading?
Yes it can. You need to have it calibrated to match the tire size. ¬¿¬
Does changing rims on my car affect its performance?
Changes to wheels and tires affect all aspects of vehicle performance. For example: My Nissan Sentra SE-R Spec V came from the factory with a 17x7J alloy wheel and 215/45ZR (87Y) summer-only UHP tire. Great April through October, useless the rest of the year in Minnesota. For winter I use a 15x5.5J steel wheel with 195/60R15 88Q Blizzak winter tire. Handling and braking are dramatically different on dry pavement. Ride is about the same since the tire and wheel packages weight the same amount - 43 vs. 44 pounds. But the car can't be driven in the winter without them. For track use I have a set of light 17x7J wheels with 225/45R17 90W Kuhmo Ecsta V700's. This combination is 5 pounds lighter per wheel and I can feel the difference on the track with notable quicker reaction times. Grip is of course much higher as this is essentially a track tire. Ride quality goes right down the tubes. If I had gone with the type of package that is all the rage these days, like a 18x8J wheel with a 225/35R18 XL 87W tire my ride quality would suck even more, braking distances would increase, steering response MIGHT be slightly better but grip would probably be no different. The problem is the greater weight of the larger diameter wheels. Ideally if rules allowed I would use 16 inch wheels for the track but I have to use 17's to stay "stock".
Can changing your original car tire size affect speedometer accuracy?
I had to learn about this when I changed my rim size to something a bit larger.If you install larger or smaller diameter tires on your car, it changes the speed at which the wheels rotate. Larger wheels rotate a longer distance to reach back to the start of the movement. There are calculators on the internet that may help you determine which way to calibrate your speedo when you put on new wheels and tires.Speedometer CalibrationIf this wasn’t helpful, try this: Get a large ball and a small ball and a measuring tape. Wrap the tape once around the small ball and note the length. Lay the tape now flat on the floor and mark that length. Now, do the same with the larger ball. Wrap the tape, note the distance and mark it on the floor next to the small ball mark. Each distance is one rotation of the individual ball.If you imagine the small ball was your existing tire, and the bigger ball was your new tire, you can see how changing them would adjust your speed per rotation and why you would need to recalibrate your speedometer.
Will the speedometer on a car read faster or slower if you change the tire size, as the rotation increases or decreases?
Yes.Which way will depend on how the diameter changed. If the tire has gotten larger, you’ll record fewer rotations per actual mile, making the speedo “optimistic” - you’ll be going faster than is indicated.Conversely, if you put on smaller diameter tires, the number of revolutions per actual mile will increase, causing you to believe that you’re going faster than you are.There are a very, very few systems that use GPS to reckon speed. Those are not affected by tire size, but may be by inability to achieve satellite lock.
What will happen if an 18-inch wheel rim is being replaced by 17-inch wheel?
Won’t answer technically I guess you weren’t looking for that either, actually nothing will happen and it is safe unless you stay within the size parameters like:Circumference(up size tire profile when you down size rim size), tire width checked (doesn’t rub front wheel well in steering lock to lock or bottoms out in rear on full load). Yes there will be differences in speedometer,odometer but they are less significant to affect vehicle operation because they are anyways not accurate at the first place and who cares! Whatever reason (you found one’s that you love or suits vehicle better) for you are convinced to replace the wheel you may go ahead.
Does changing your car's wheel diameter change your speedometer and odometer readings?
Of course. Also, consider this: A larger, heavier tire and wheel assembly will gain more kinetic energy from each short bump it encounters, which the suspension then tries to absorb without passing on to the passenger cabin. So smaller tires give a smoother ride. When tires bounce, a given amount of suspension hardware can put them back in contact with the road quicker if they have low mass. So smaller tires should give better handling. But no, it's not that complicated to adjust the speedometer to read correctly. For mechanical systems, it means changing one gear in the system, digital is a bit easier, just an adjustment to the electronics.
Will getting bigger rims throw out my abs or speedo?
First make sure the larger size will fit in the wheel well without affecting the fenders and suspension travel. Next is to look at the tyres and see if a lower profile is available. So if your tyres are 195/75-14, you'll have go to a 195/65-15 or something along those lines. Basically if you just went larger the speedo would be out about 5km/hr per inch or more (reading low). So using a lower profile tyre will be reducing the effect on the speedo and keep it more accurate. This will also have the effect of lowering your rpm for a given speed as well, but has the negative effect of using more fuel to get started from a stop (offset if you travel a distance or highway rather than through town). So using a lower profile tyre will help offset speedo error it also means you have to slowdown for bumps and potholes etc. In the larger rim sizes you'll look for a 55 or 45 profile tyre. these have little rubber between the rim and the road and potholes can damage a rim if hit at speed (curbs can be downright destructive). The higher profile tyres are better for snow, mud and more cushioning (better ride). Talk to a tyre installation garage for info and measure the tyres and rims and see what you like (and can afford).
How does a car's wheel size (17 in vs 18 in) affect the performance? Is performance based on how fast the wheels turn, or how wide the tread can be?
Generally speaking, larger wheels allow for stiffer suspension setups, as they have less sidewall flex. Tire sidewalls can "roll over" during hard cornering, especially as they become tall. Larger wheels allow for lower profile tires, and low-pro tires allow for stiffer suspension setups and better handling.However, there are a lot of moving parts here (bad pun, I know), so there are a few things to consider:Heavier wheels have greater rotating mass, which means they can hamper acceleration. The difference between a 17" and 18" wheel isn't usually too significant, but if you take 15's off an old Civic and put 20's on in their place, you'll note a decrease in acceleration...but you'll look cool as hell!Typically, larger wheels can accommodate wider tires, but that's often because tire manufacturers offer wider tires for larger rim sizes, and also because larger wheels are often manufactured to be wider. ...There's nothing about the wheel diameter in and of itself that dictates width (at least not if we're talking about a normal range of wheels).Tire width helps with traction, at least in normal driving conditions (wide tires aren't too helpful in the rain, for example). Hence, a high horsepower Countach would have wide tires.If you look at wheel diameters, they've exploded in the last 20 years. 15" rims were common in the early 90's, now 17" rims are common. This is mostly about styling, but it's important to note that larger wheels are often needed to fit around large disc brake systems.Still, back in the 80's, a 20" rim was rare on a typical passenger car...even on a Lambo. ;)
Whats the biggest rim and tire you can put on a 1984 fiero SE 2m4?
I'm looking into putting racing rims and tires on my fiero...its a first generation 1984 pontiac fiero 2m4 . Right now it has 14 inch rims with standard tires but still there's a decent gap in the wheel well. I dont really know to much about this, so I'm learning. Whats the biggest rim and tire I can put on it with scraping?