two questions in 94 sportage

Hi every one..

I got a Kia sportage 1994 and i have these two questions:

1/// Is there any disadvantage if i change the tire size from the orginal size (15" 205/75) to the size (15" 225/75) ?.

2/// Is there speed limit when i use 4H or 4L ?

Thank you

Ayaz

Kia sportage 1994 and i have these two questions:

1/// change the tire size from the original size (15" 205/75) to the size (15" 225/75) ?.
2/// speed limit when i use 4H or 4L ?
The larger tires will make it a little less "sporty" , as the larger tire will run the engine at lower rpm for same ACTUAL speed; conversely, at same indicated speed, the car will in fact be going faster ; acceleration, already not a dragster, will be even worse. NOtice that generally, those opting for larger tires "lift" the suspension to allow for clearance, but the size change you consider is not dramatic. If all you want is a wider footprint, you could use 225/70 x 15
THere is no speed limit for the car as such in 4H or 4L...but the engine rpm is limited, and will rev more easily in 4L, so overrevving the engine is then easier in 4L...and a timing belt failure with this SOHC means bent valves....so beware.
The real limitation is never to drive in 4x4 (either L or H) on dry surface, as this car configuration is "part time" 4 wheel drive: since there is no differential between front and rear drive shafts, conditions where the front and rear wheels would not rotate at same speed on a solid surface would overtorque the components (hubs, shafts, differential and transfer case ) with high risk of damage.

The larger tires will make it a little less "sporty" , as the larger tire will run the engine at lower rpm for same ACTUAL speed; conversely, at same indicated speed, the car will in fact be going faster ; acceleration, already not a dragster, will be even worse. NOtice that generally, those opting for larger tires "lift" the suspension to allow for clearance, but the size change you consider is not dramatic. If all you want is a wider footprint, you could use 225/70 x 15
THere is no speed limit for the car as such in 4H or 4L...but the engine rpm is limited, and will rev more easily in 4L, so overrevving the engine is then easier in 4L...and a timing belt failure with this SOHC means bent valves....so beware.
The real limitation is never to drive in 4x4 (either L or H) on dry surface, as this car configuration is "part time" 4 wheel drive: since there is no differential between front and rear drive shafts, conditions where the front and rear wheels would not rotate at same speed on a solid surface would overtorque the components (hubs, shafts, differential and transfer case ) with high risk of damage.
Thanx for replay and for these good advises.
Ayaz