What does the R on a spark plug mean?

resistor type
[R] Resistor – If an R is present, this indicates a resistor type spark plug. Resistor type spark plugs reduce the amount of radio frequency interference (RFI) that can cause ignition misfires and static on the radio.

Do iridium plugs increase performance?

It has a high melting point, which also means that it can produce great electrodes while retaining its fine characteristics, Iridium spark plugs gives you better performance, complete combustion and excellent longevity which makes you free from change your spark plugs frequently.

What is the difference between NGK and NGK R spark plugs?

Not sure if this has been answered but the only difference between the NGK and NGK-R is the R stand for resistor. It will supress electrical interference with electronics.

What does the R stand for in NGK?

you are correct it stands for resistor.

What is the difference between hotter and colder spark plugs?

The term colder plug and hotter plug refers to how fast or slow the plugs transfers the heat from the tip. A colder plug transfers heat faster while a hotter plug is slower. The goal is to keep the cylinder temperature between 550*c and 800*c which is about 1020*f to 1470*f.

Is iridium or platinum better?

Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs.

Should I upgrade to iridium spark plugs?

Starting your car in the winter Winter starts can seriously decrease your car’s performance, and also run the risk of spark plug fouling. Upgrading your spark plugs to an Iridium fine wire plug will provide instant starts in cold weather and help eliminate the risk of fouling.