Has a slight wobble at low speed? - 1990 Nissan Pulsar

You need to jack it up and spin 1 tire at a time, use a run out guage on the tires and wheels.a high speed 60 to 65 mph is from wheel balance. low speed is a bent wheel or a bad tire. belt separation

This can be a tire, tire tread can come loose from the belt, or the tire is damaged like due to hitting a curb. Also you can have a bent rim also from hitting a curb or such. Jack up each tire and spin by hand and watch as it turns. to find the one and the cause of your wobble, eather tire or rim, look at the inside rim also people miss the inside when looking for problems..