ECTA Arkansas mile spring 24

im actually running a 130/70zr/17 for lsr and i have a 130/70zr/16 for drag racing settup, both with ceramic bearings.
 
Wow that 130/70 is back to the -5% diameter size from your stock 16" front, she will be steering a lot sharper now that is for sure!
150/80-R16 vs 130/70-R17 Tire Comparison - Tire Size Calculator | Tacoma World

Don't go road racing on them curves though or your foot-boards may hang up, but ........I do have spares for yuz all!


150/80-16130/70-17Difference
Diameter inches (mm)25.45 (646.4)24.17 (613.8)-1.28 (-32.6) -5%
Width inches (mm)5.91 (150)5.12 (130)-0.79 (-20) -13.3%
Circum. inches (mm)79.95 (2030.73)75.92 (1928.31)-4.03 (-102.42) -5%
Sidewall Height inches (mm)4.72 (120)3.58 (91)-1.14 (-29) -24.2%
Revolutions per mile (km)792.5 (492.43)834.59 (518.59)42.09 (26.15) 5.3%
 
I just had to buy a floor board because i dropped it last weekend in a gas station parking lot, stupid mistake, anyway no further details, It definitely handles better with the 130, the stock 150 is a slug, the goldwings, the challengers the hogs are rocking 130s be alot of bias ply but still the 130 carves much better, i just need radial so the weight rating is not as high as those bias ply settups.
 
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I find this tire-talk very intriguing. The original Rocket Roadster sat on a reverse dago where the front axle sat ½" higher than the rear axle.
Back in 2012 When I went to a 240/ 55R 16 rear & 140/75R75 front the rear axle was placed ½" taller than the front axle. This reduced trail and hugely improved handling. Later I discovered the Michelin Road 5 (now 6) 150/70R17 rear tire. I run this tire on front backwards and my world was changed once more. What a tire, what grab while dragin' my Standard boards all way 'round a twisty! I found the wider 150 aspect ratio to work better with the wide 240 rear tire.
I understand wanting "level" axles, but at real high speeds won't this bring less front end stability?
 
With the 130/70/17 and 200/55/16 im 1/4 lower in front, im fixing to install the 130/70/16 for testing and it should make front 1/2 lower than rear but i was wanting this for dragstrip. I have fork height set to stock for all this tire testing. I have run the forks a 1/4 in up in trees and that seemed to help the 150 front handling. Ive not done this lsr racing so im gonna be on a fast learning curve. On the drag strip i like the front end lower as i think it helps with launching. Again all a learning curve as i cant speak to experience as i have none. But im gonna make experiences and hold on tight. I will know more when i can get the bike above 130 or so, i am taking barbie steps with this testing thing 100ish feels great with the 130/70/17 and 200/55/16. We will be hitting local drag strips over the next 5 weeks to figure out more.
 
My forks are 1/4" up in the tree, and I intend to put them back down. I wonder if it has to do with the high speed weave I was getting. Since I took the bags off I haven't seen it, but I've only been to 120 or so, I'd want to hit 130 or 135 to feel sure it's gone. I live in the flatlands now anyway, what am I going to do with quicker steering? Something you might want to experiment with before your high speed runs.