If concours-quality restoration is your thing, or you believe that what the factory offered is sacrosanct, then this article is not for you. If, however, you are open to change and are interested in improving the looks and handling of your car, then read on.
There are two primary reasons to upgrade wheels from their original sizes: Obviously, the intent of any change is to get the most out of your car without breaking your budget or creating more problems than you already have. This article will broadly cover some of the positive and negative aspects
Mg midget performance tires wheel and tire changes. Nowadays, that original look may be dated, and the performance expectations have increased to keep up with current trends of high-speed stability and cornering.
Today, the many available wheel and tire options offer increased stability and safety for performanceminded drivers, or the choices may be merely adequate for those keeping up with modern iron on American freeways.
Changing to a wider wheel allows the use of wider, lower-profile tires, which generally have far superior Mg midget performance tires characteristics compared to the original-sized tires. Modern tires are listed in Metric sizes. The first group indicates the nominal width of the tire, called the section width.
The second group is the aspect ratio, which gives the height of the sidewall as a percentage of the width; this is also referred to as the profile of the tire. So, series tires have taller sidewalls than series sizes. Modern performance tires are generally only available in low-profile series and lower aspect ratios.
Even these minor upgrades can cause fi t problems with the limited clearance in narrow wheelwells. Correct-offset wheels must be used to ensure that the tire is centered in the wheelwell. Positive offset indicates that the hub center mounting surface is toward the outside of the car; Mg midget performance tires offset indicates that the hub center is closer to the brake drum.
Mg midget performance tires are some typical offsets necessary to keep the wheel centered for popular British sportscars:. By keeping the wheel centered in the wheelwell, there is less chance of the wider tires fouling the inner fender, suspension components, or outer fender—this is most important with the narrow rear fenderwells of most British cars. For street driving where there is likely to be a lot of suspension and body movement, it is a good idea to stay conservative on width.
Otherwise, the smell of burning rubber and the sounds of tire-rub are going to accompany any spirited driving. Make it a point to do your test-driving with your spouse or significant other in the car. If you want that maximum rubber, road-racer look, be aware that most racecars have had some radical surgery and are often fitted with stiffer springs and panhard rods or other axle locators to ensure that suspension movement is limited.
The square-arch rear-fender cars have very restricted wheelwells. Even a section tire is probably going to rub on the back under hard cornering.
The round wheel-arch cars have much less of a problem, and 5. This led to many a Bugeye that looked like it got mated to a steamroller. Perhaps Austin moved to the square wheel arches specifically to prevent Americans from fitting Chevy Vega wheels with fat, wide-oval tires to their cars. Their rear suspension has limited movement, which allows fitting wider wheels and tires without major rubbing problems.
However, overly wide tires can spoil the clean lines of the car when negative-offset wheels are Mg midget performance tires, which push the tire edge past the fender lip. BN1 fenders are very tight, so wider tires are not advised.
On all Mg midget performance tires, check fender clearance. Like the Healey, the rear wheel arches are open and can accommodate tires up to cross-section without problems. The rear fender lip on early cars and lowered late cars is at the widest point of the tire, so tire bulge can be an issue.
Raising or lowering the suspension may allow extra clearance, but suspension travel can cause clearance issues, particularly on the left-hand side of the car. The inner bumpstop structure and front swaybar can cause clearance issues for wheels that have too much positive offset.
Under hard cornering, the rear axle will move sideways, aggravating clearance problems. On this car it is very important to have the wheel centered in the well, as suspension travel and axle movement "Mg midget performance tires" be major problems. Minor fender clearance issues can be addressed by rolling or grinding the rear fender lip. Fender clearance is an issue, and a wheel with less positive offset is required to clear the front brake calipers.
This restricts the maximum wheel width. Again, a less positive offset wheel is required to clear the front brake caliper; fender clearance is improved and tires up to cross-section can be installed as long as the car is not significantly lowered.
Rear fender clearance can be a problem on lowered cars. A positive-offset wheel is required, but the wheelwells are quite spacious. Open wheelwells allow the use of 5.
One way to increase the availability of high-performance tires is to increase the diameter of the wheel, which allows the use of lower profile tires while still maintaining the correct overall tire diameter. An inch-larger wheel allows the use of high-performance lowprofile tires without compromising looks and performance. This reduces the overall gear ratio and does not fi ll the wheelwell from front to rear.
Moving up an inch in diameter allows the use of a wider wheel due to increased suspension clearance. Here are some suggestions that will get you going with even more style. The first option is to look at the factory racing history and see if a wider wheel was available as an option. In the case of the MGB, the factory offered a 5. Where spoke wheels foul the brake drum, the wider MGC wheels will fit without a problem.
These wheels look stunning, but also have a much-reduced offset. So, outer fender clearance must be carefully checked. Tires and wheels are one of the most popular topics for discussion, and I hope that this article may clear up some of the questions about possible fitments. Each car is different, so always check clearance before allowing a tire to become damaged and unsafe.
If you are looking for the ultimate in wide rubber, be ready to do some body modifications; if in doubt, stay conservative and minimize headaches. The difference in handling between one tire size to the next may be insignificant compared to the problems caused by tire-rub when cornering. Kelvin Doddplussizingtirewheel. May 15,
Mg midget performance tires Regards, Bob Douglas Sydney, Australia.
May 29, 9: May 15, 8: There is so much to know and share! May 15, There is not much to add regarding the big Healeys.
November 2, Hi Kelvin So what is the best set up for a tr3a? I wanted to go for the 5. May 29, 5: The square-arch came out in Chevy Vega wheels came out in They made room for wide tires within the wheel well.
May 29, 8: Those wanting big Healeys to ride at the proper height with radials should look at the HR15 from Michelin. I get a little concerned when people start talking about wider tyres on these older cars. One should think very carefully before fitting wider tyres. Lighter cars in general will slide more on harder tyres and closer represent the original feel of the vehicle.
Tyre age is also an important concern. They give better grip, and wear out faster, so you get performance and new tyres in "Mg midget performance tires" intervals. And yes, those racing tyres were the ones they used in the wet. Big wheels are IN, but they generally Mg midget performance tires more and can be like adding a HEAVY flywheel on acceleration, and now add braking too, not to mention it is more unsprung weight.
Narrow tires are often better in snow, and they have less Cd, too. Then there is rolling resistance, economy.
The future may be to go back to the original size. It would be nice to know which low rolling resistance tires have some grip also. June 3, 7: July 4, Offset and backspace have been suggested at various sizes. Anybody know what is correct absolutely? Divide this width in two to give the centerline depth. Lay a straightedge across the inner rim of the wheel. Measure from the straightedge to the mounting rim of the wheel.
Subtract the centerline depth from the mounting rim depth. This gives the offset,
Mg midget performance tires is now usually designated in millimeters.
Here are some typical offsets necessary to keep the wheel centered for popular British sportscars: Plus-Size Wheel Options One way to increase the availability of high-performance tires is to increase the diameter of the wheel, which allows the use of lower profile tires while still maintaining the correct overall tire diameter.
You may also like The narrow fenders restrict most owners to the cross section tires. Need new tires for your MG Midget? We make it easy to Mg midget performance tires the best MG Midget tires. Buy online PERFORMANCE TEST TRACK DRIVES: THE SLALOM. I've spent years trying to hone my MG Midget into a fast-road, and has proved a brilliant match for the Midget's supercharged performance.
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