mack31 Posted 21 hours ago Share Posted 21 hours ago I currently have a 6.14 ratio with 11r22.5 with a 707. Am I gaining much by going to 5.13 Quote Link to comment Share on other sites More sharing options...
tjc transport Posted 19 hours ago Share Posted 19 hours ago You will gain top speed, but loose pulling power 1 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
Vladislav Posted 19 hours ago Share Posted 19 hours ago 6.14 : 5.13=1.19. About 20% increase. Notably. If you go 50MPH at certain revs you will go 60MPH than. If only the rig would have power enough to go that fast. As as was stated above you get correspondingly sized drop of pulling torque on the wheels. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
cruiseliner64 Posted 19 hours ago Share Posted 19 hours ago Something the same thing here.we have 1200R24 tyres on our Cruiseliner but this tyre size is not available here in Ireland.We can,well maybe we can,get 1100R24 tyres would this change things with the gearing/speed??? Paul Quote Link to comment Share on other sites More sharing options...
67RModel Posted 18 hours ago Share Posted 18 hours ago 36 minutes ago, cruiseliner64 said: would this change things with the gearing/speed??? Yes. going to a shorter, smaller diameter tire will result in lower top speed and more pulling power at equal rpms. By how much you would need to know the revs/mile of a 1200 tire versus an 1100 series and then run your calculation. That information is published by the tire manufacturers..... 1 Quote Link to comment Share on other sites More sharing options...
mack31 Posted 18 hours ago Author Share Posted 18 hours ago Thank you it’s for an old gas guzzling fire truck. Just trying to get to more shows as we live around a lot of highways. Quote Link to comment Share on other sites More sharing options...
cruiseliner64 Posted 18 hours ago Share Posted 18 hours ago 24 minutes ago, 67RModel said: Yes. going to a shorter, smaller diameter tire will result in lower top speed and more pulling power at equal rpms. By how much you would need to know the revs/mile of a 1200 tire versus an 1100 series and then run your calculation. That information is published by the tire manufacturers..... Thanks for that information.we would like to stay with 1200 tyres but the tyre importers say they cant get 1200 tyres but might be able to get 1100s.note the word 'might".....24in rims are rare here so tyres to suit is a problem..... Paul Quote Link to comment Share on other sites More sharing options...
tjc transport Posted 17 hours ago Share Posted 17 hours ago i have not noticed much of a difference between the 1200 and 1100 tires other than weight capacity Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment Share on other sites More sharing options...
cruiseliner64 Posted 5 hours ago Share Posted 5 hours ago 12 hours ago, tjc transport said: i have not noticed much of a difference between the 1200 and 1100 tires other than weight capacity Thats good.weight capacity is not an issue as it will be a show truck only.here in Ireland when you regester a vehicle as vintage you are not allowed to carry a load or in the case of a Semi your not allowed to haul a trailer and the tractor must be disabled in such a way as it cant haul a trailer.the usual thing to do is remove the air lines between the tractor/trailer. Paul Quote Link to comment Share on other sites More sharing options...
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