26x10x16. Vs. 26x10x15 et streets
#1
26x10x16. Vs. 26x10x15 et streets
So I have both. Last time out started on the 15's. 60 foots were 1.6's no matter what I did. Bigger burn outs, used 2 step, free rev, lower tire psi. I simply swapped back to my 16's and picked up .15
So before I sell these 15's anybody have an idea why they won't hook? They were new fresh, nice and soft rubber. My 16's are 4 years old and stick! I really expected to brake some axles with the adde sidewall the 15's offer. I am stunned.
So before I sell these 15's anybody have an idea why they won't hook? They were new fresh, nice and soft rubber. My 16's are 4 years old and stick! I really expected to brake some axles with the adde sidewall the 15's offer. I am stunned.
#2
IRS 4 Life
iTrader: (12)
Join Date: Feb 2001
Location: Sicklerville, South Jersey!!
Posts: 2,634
Likes: 0
Received 2 Likes
on
2 Posts
Personally im looking to get away from the etstreets, and head into a etdrag. The sidewalls are softier.
Now to your issue
Were you spinning the tires off the line, what tire pressure, rpm, any video of the launch?
Need data!!
Now to your issue
Were you spinning the tires off the line, what tire pressure, rpm, any video of the launch?
Need data!!
Trending Topics
#9
My real question wasn't really what tire pressure, rpm, length of burn out but was more of could there be an issue with theses tires? Could 15's come with a harder material?
#10
Rotary Enthusiast
iTrader: (5)
The video isn't there..
That is weird the 15s don't hook as good as the 16s I assume with same air psi, Maybe they do need more burnouts/passes.
14psi is too much, mine don't hook unless they are down around 10 psi (14-16 psi and mine would spin too much), that's where you get the 1.3s and 1.4s
That is weird the 15s don't hook as good as the 16s I assume with same air psi, Maybe they do need more burnouts/passes.
14psi is too much, mine don't hook unless they are down around 10 psi (14-16 psi and mine would spin too much), that's where you get the 1.3s and 1.4s
#12
I used to believe 10 psi was the best. I read somewhere that this was too low. Said thus would cause them to not be flat tread wise but buckle. I tried upping the psi each pass until I got worse and 13-14 depending on the conditions is what yielded the best. Can't deny the results.
#15
IRS 4 Life
iTrader: (12)
Join Date: Feb 2001
Location: Sicklerville, South Jersey!!
Posts: 2,634
Likes: 0
Received 2 Likes
on
2 Posts
Well majority of the data was from the old setup, still leavin on the 2 step @7k...
New setup still leaving at 7k but started back at 13 psi and found my sweet spot at 10psi... Now that i have data logs i leave at about 12psi of boost.
I run a oldschool setup
Tociko iluminas ( setting2) , eibach prokit, ubotanium bushings, rotary extreme trail and toelinks, factory sway. When i get home ill make a excell sheet on all my60's new and old so im not speaking from memory.
What rpm is your 2 step set for?
New setup still leaving at 7k but started back at 13 psi and found my sweet spot at 10psi... Now that i have data logs i leave at about 12psi of boost.
I run a oldschool setup
Tociko iluminas ( setting2) , eibach prokit, ubotanium bushings, rotary extreme trail and toelinks, factory sway. When i get home ill make a excell sheet on all my60's new and old so im not speaking from memory.
What rpm is your 2 step set for?
#16
I leave at higher rpm's. My 2 step is set for 7800. But my better 60 foots have come from free revs and that was closer to rev limiter. I too always datalog every pass. I have also found that stock touring model spring/ struts in the rear have worked the best for me. Have tried 4 different struts and springs. Now I feel this set up could be just a tad harder as it looks like it bounces from bottoming out.
So it sounds to me that there are different combos that will work just depends on your setup.
So it sounds to me that there are different combos that will work just depends on your setup.
#18
I used to believe 10 psi was the best. I read somewhere that this was too low. Said thus would cause them to not be flat tread wise but buckle. I tried upping the psi each pass until I got worse and 13-14 depending on the conditions is what yielded the best. Can't deny the results.
every car will have a different sweet spot
under laod/accelleration the tire will grow and psi will jump up so take that into consideration.
plus the compound will play a huge factor along with the manufacture
#19
IRS 4 Life
iTrader: (12)
Join Date: Feb 2001
Location: Sicklerville, South Jersey!!
Posts: 2,634
Likes: 0
Received 2 Likes
on
2 Posts
SO old setup 13PSi tires, 7k 2 step, 22 Passes average 1.740 60' (I removed anything over 2 sec as its not gonna give a relative avarage when it all went wrong)
New setup, 10-10.5 psi tire pressure 14 slips average 1.510 with a low of 1.369!!!
Theres a few more passes but i cant find the slips
New setup, 10-10.5 psi tire pressure 14 slips average 1.510 with a low of 1.369!!!
Theres a few more passes but i cant find the slips
#22
IRS 4 Life
iTrader: (12)
Join Date: Feb 2001
Location: Sicklerville, South Jersey!!
Posts: 2,634
Likes: 0
Received 2 Likes
on
2 Posts
Double checked, since I dont have a speed sensor (yet) I cant see first movment but can see rpm going above 7k, so
13 psi then .05 later 7600 rpm and 20 psi
The Dis-2 just holds the rpm, we do all the fuel and timing kung fu in the microtech when on the step
13 psi then .05 later 7600 rpm and 20 psi
The Dis-2 just holds the rpm, we do all the fuel and timing kung fu in the microtech when on the step
#25
Rotary Enthusiast
Join Date: Aug 2006
Location: Melbourne FL/San Antonio TX/Okinawa Japan
Posts: 1,216
Likes: 0
Received 10 Likes
on
10 Posts
I can see the new tires getting lower 60ft. There not spinning like the old ones. I don't look at the launch rpms and boost off the line. I look at how far the rpms/boost fall after the launch.
just a thought
just a thought