b'TECH TIP PAGE Tech Tip 6A: Panhard Bar Versus Watts Link. Both have pros & cons. Our Quik-Tune Watts Link System is the quickest, easiest to adjust and handles equal both directions. We 100% recommend it for autocross, because you have very little time in between runs & may have two courses that favor left or right hand corners differently.For Road Racing/Track Day Cars it is more of a choice between quick versus optimum tuning. A panhard bar (PHB) is more work. First you need to adjust the left & right side PHB heights to achieve equal handling on left & right corners. The axle mount side will be lower than the frame side when you achieve this. We start the axle side 1/2" lower & tune.At the track, assuming you have adjusters on both sides, you can tune each side of the PHB mounting points to favor left or right corners. How? If you lower the driver side of the PHB, you will see more rear grip on RH corners & less rear grip on LH corners. If you lower the passenger side of the PHB, you will see more rear grip on LH corners & less rear grip on RH corners. Raising the PHB on those same sides has the opposite effect.We can tune a double adjustable PHB to favor the 7-9 left or right hand corners of a road course & have faster lap times, but it is more work. A Watts Link will always handle equal both directions. Our Quik-Tune Watts is super quick & easy to adjust. Your call.The Track-Warrior rear frame rails were designed to mount narrower, so the shocks could mount wider. For this reason, we cannot make a panhard bar package fit in Track-Warrior frame rails. We can in the Race-Warrior & factory frame rails because they are set wide. Tech Tip 7: Rookie Racers often dont know how critical tire width to rim width ratio is to grip. We often see people putting good width tires on narrower than ideal wheelsusually tosuck the sidewalls in for fender clearanceand experience significantly less grip. Anexample is when Racers want to put a 315 tire with 11.8 of tread on a 10.5 wheel. Not good.The optimum wheel width for grip varies with sidewall height & design. Stock Car bias plytires have 6-7 sidewalls & respond well to wheels around 10% wider than tread width. Modern cars with 18 wheels & 30 or 35 series radial tires have 3.5-4 sidewalls & respond well to wheels equal to tread width or 2-3% wider than tread width.If the rim to tire ratio is narrow, the sidewalls are bulging out past the rim, and we run less tire pressure to achieve even tread wear. This is bad. The lower pressure is not enough to keep the tire carcass in the proper shape with high G side loads (even worse with taller sidewalls). So, the tires roll under significantly during cornering. This distorts the tread contact pattern.This is WHY we have less grip with narrow wheels. Wider wheels require more tire pressure to achieve even tread wear & this keeps the tire carcass in the proper shape with less roll under. For 18 wheels with radials, treaded or slicks, we recommend: For 275/35-18 tires with 10.1 of Tread, we recommend 9.5 min, 10 is better, 10.5 is best. For 315/30-18 tires with 11.8 of Tread, we recommend 11 min, 11.5 is better, 12 is best. For 335/35-18 tires with 12.7 of Tread, we recommend 12 min, 12.5 is better, 13 is best.29 0'