Loft, shaft flex, head size, and swing speed — what actually matters when buying a driver, and how to stop wasting money on the wrong one.
Every driver decision starts here. Without knowing your swing speed, you're guessing. With it, you're making informed choices.
Swing speed is measured in miles per hour (mph) at the moment of impact. Most male recreational golfers fall between 80–105 mph. LPGA Tour players typically 85–95 mph. Senior golfers often 70–85 mph.
Under 85 mph: You need more loft and a lighter shaft. Don't try to swing harder — swing smarter with the right club.
85–105 mph: The sweet spot for most male golfers. Mid-loft drivers (9–10.5°) work well with moderate-flex shafts.
Book a TrackMan fitting to get your actual swing speed, attack angle, and ball flight data. That's the only way to make a real decision — not a guess.
More loft isn't always better. The right loft gets the ball airborne efficiently with the spin rate it needs to carry and stop.
Launch angle and spin rate are determined by swing speed, attack angle, and driver loft — together. A driver that's too strong (low loft) for your swing speed will produce a low, spinning ball that rolls out more than it flies.
General guide:
These are starting points. A launch monitor tells you exactly where your ball is starting and where it's going.
Most buyers focus on the driver head — the brand, the look, the price. The shaft is where the performance actually lives.
Shaft flex determines how much the shaft bends during the swing. Too stiff for your speed and you lose distance and accuracy. Too flexible and the head lags, creating a slicing pattern.
Flex guide by swing speed:
Beyond flex, shaft weight and torque affect feel. A lighter shaft can increase swing speed for some players. Your fitting will tell you which combination works best.
Driver head sizes have increased significantly since the USGA lifted the coefficient of restitution (COR) limit in 2004. Today's drivers range from 440cc to 460cc — larger heads offer more forgiveness on off-center hits.
Forgiveness vs. workability: A larger head (460cc) with a deeper center of gravity is more forgiving. A smaller head (440cc) offers more workability for better players who don't need help finding the center of the face.
Face material (titanium vs. composite) and face design (variable thickness, roll radius) affect ball speed and feel. Technology has improved dramatically — even budget drivers have efficient faces now.
"I bought a 10.5° driver because that's what the pro shop recommended. My swing speed is 78 mph. I was hitting it 30 meters shorter than I should have been."
Before you buy a driver, get fitted. TrackMan shows your actual numbers — then you buy with confidence.
Book a Driver Fitting →