(2) Any bump, bulge, or knot, affecting the tire structure or (1) Any ply or cord exposed either to the naked eye or when cuts or abrasions on the tire are probed or They might be crazy, but they certainly aren't stupid.Ī tire shall be considered unsafe if it has: I am sure the guys check the car over before throwing the it on the track. If your tries are so old and hard to the point where chucks are falling off, then of course it is a fail.īut there isn't a rules even in such strict yearly test to say that tires over 8 years old must be removed from the road. If you have a 15 year old tyres, they can recommend you to change it, but you are not legally require to do so if the condition are meet. Rule state, 1.6mm over 75% of the tyres or it fail, straight and simple. The only check on the tires is thread depth. What is too old, what is too hard, it would be a nightmare to come out with strict rules for it.Įven if you look at UK that have a pretty strict yearly inspection (MOT), they will check emission, play in bushes, play in wheel bearing, all light, signals, suspension, corrosion in chassis rail, etc. Possibility, but to enforce that will require quite a specific rules that you know tires manufacturer will fight to the death to get thrown out. Of course LEOs can write tickets for defective equipment and I wouldn't be surprised if worn out or old/hard tires would be considered negligence if one was involved in an accident. Never, but there are no annual type inspections here in Washington State, not even for emissions in the county I live in. It was just a fun project we got into for fun, so I am just sharing the result. The driver is a professional racing driver as well as the Nissan GTR Ring Taxi driver, so he isn't going faster because he is learning the track (some had pointed that out before).Īgain, this aren't meant to be a scientific prove of anything. So if you want to see how each variable change along the way, you can see the documentation above. I do know the official recommendation is not to use tires over 6 years old, but when was the last time you had a yearly inspection that look at the age of a tire?Īnyways, for those who want the long detail version, here is what we got.ĩ:21.8: Original Base Lap, ran how the car was purchased.Ĩ:59.9: Change only the tires from the old road tires to Kumho V70A Semi-Slick tires.Ĩ:54.3: Installed MeisterR Coilovers and re-done alignment, reused the same tires that was used on the base lap.Ĩ:39.5: Change the tyres back to Kumho V70A with the MeisterR Coilovers and new alignment. I know even with our strict MOT in the UK, no one check the age. Not unheard of seeing 10 years old tires on road car as I don't think there is an "official" check for that. We done little steps along the way but I thought i didn't want to bored you guys with all the long winded details.Īlso, this is Nurburgring, which is a public toll road.Īs far as tires goes, that was what I had been told. This was just a little fun project we done, nothing really to prove anything.īut that was the end when we actually added everything together. They done a small Questions and Answer section in the front, so if you want to skip to the lap go right on to 11:50 when they start the run. The combined modification knock the over 40 seconds off the lap time, from a 9:21 to a 8:39!!! That is it, same car, same driver, same track. Unknown alignment > Fast road alignment (if you count that as a mod). Unknown suspension > MeisterR Zeta-R Coiloversģ. They ran a few base lap with the car as is, and done a very respectable 9.21Ģ. The total car build cost including buying the car was around 3,000 Euros (~$3,400 US Dollars) The idea was to get a 90hp MK1 Miata around the Nurburgring in the 8 minutes mark as cheap as possible. The Ring Banana project that MeisterR participated in late last year. For those who haven't seen this, I thought it will be interesting to post it up.
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