The diff is only as weak as those who abuse it. Lot's of people have run 100+ more whp for years on the stock diff with no problems. You can't believe everything you hear unless you also take into account the details behind what you hear.

I look at this statement:
1. This tells me something is not right. This usually happens when the tire pressures are not even from side to side. This induces a difference in dynamic tire diameter. So, if you are getting this type of response, it would appear that the dynamic tire diameter may indeed be different even though you may have the same pressure in each tire.
2. Until you resolve this situation, STOP "flooring" it to make it pull to one side. When you know it does this and if you continue to do it, then this constitutes abuse. Who knows what will happen to your diff.

 

thanks a lot for the info guys... I think imma keep it the way it is until wed or so..if it really starts to bother me I guess ill put the fronts in the rear etc.. either way ill deff not floor it..

thanks again

 

If your car pulls to the right when you accelerate, that means your left rear tire is larger. (Think about rolling an ice-cream cone.) Yes, according to Honda driving in such a configuration can lead to extra wear on the LSD. They don't want you to do it for even the brief amount of time you'd have the spare tire on, although they may say that so somebody doesn't drive like that for 1000 miles and make a warranty claim... Fact is, nobody here really knows how long the diff can take it.

One thing you might want to do is put some extra air pressure in the smaller diameter tire - enough to balance everything out when you're accelerating if possible.

 

thanks.. ill try putting more air in...
I can see how rolling on the spare is bad... but something as small as 2 diff brands of the same tire shouldn't wear it down much if any? it would be almost the same as having low psi in one of your tires (if they where both the same make etc)?

 

thanks.. ill try putting more air in...
I can see how rolling on the spare is bad... but something as small as 2 diff brands of the same tire shouldn't wear it down much if any? it would be almost the same as having low psi in one of your tires (if they where both the same make etc)?

 

Maybe worth your time and money to just rennt a beater for 2 days - driving the piss out of a Geo Metro can be pretty fun!

 

Where did your guys get your tire mechanics training?

A belted radial tire (and our tires are as belted as they come to get the speed rating) has a rolling radius (or diameter or circumference as you wish) that is essentially constant -- independent of tire deflection. Now, different pressures affect the vertical deflection of the tire, but the rolling radius stays within a few revolutions per kilometer (RPK). This value is usually slightly smaller than the measured, inflated tore diameter.

Tire sizes are designated according to width and diameter "windows" defined by The Tire & Rim Association of Copley, Ohio. T&RA works with tire manufacturers to define these windows. That said, one company's 245/40R17 may be significantly taller or wider than another's and still carry the same sidewall designation. In fact, a trick used by many tire manufacturers is that "close tire sizes are built the same and cured in the same mold -- like 195/65R15 = 205/60R15 -- their windows overlap. Also, the same size tire, but with big tread depth differences will have different RPK numbers because the belts are laid at a smaller diameter to accommodate more tread outside the belts.

My guess is that your two tires do indeed have different rolling radii. That's why you see so much torque steer. See if you can find any tech data from the tire manufacturers. A few psi on tire pressure would not be that noticeable.

There were a lot of questions about tire rolling radii when ABS and AWD appeared. Some ABS systems will give an alert if the tires differ in RPK by more than 1%. Some AWD systems have difficulty as well.

But consider this about your differential. Every time you VTEC in a really tight corner, you are putting far more stress on the Torsen diff than any tire issue could cause. To be safe, and for peace of mind, why not just drive like a little old lady until you get matched tires?

 

thats what ive been doing lol... sounds stupid.. but its crazy how much longer it takesme to get home going 50-55 rather than 75-80 with burts of 95 lol..