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The profile of your tires will have great effect on how the bike handles. Profile refers to the curvature if you were to do a cutaway to see line of the tread. See the tread line on this pic...
A flatter profile (center has less curvature) will mean that turn ins are "slower" or... you have to actively work on turning the bike more with increased pressure for counter stearing.
A higher profile (center has more curvature) will mean that turn ins are "faster" or... you have to work much less on turning the bike as just slight adjustments will make it want to "fall" into the curve.
Generally a new tire should have an even curvature for the entire tread. As it wears depending on the riding patterns of the user, the profile can change. As has been mentioned for example, the "lots of highway" or straight riding with little leaning will mean that there is alot more wear center of the tire and less on the outter edge. This compounds to make a tire that is very flat in the center, but then has a sudden transition on the outter edges for the curvature of the tire.
For a new rider, a worn tire like this can cause added insecurity when trying to learn to lean the bike. It means you have to give more forceful input to start the lean, but then the bike will suddenly want to "dip" when you get past the worn flat spot. That feeling will make a new rider feel like the bike is wanting to "drop" or fall over, so you tend to avoid leaning the bike. That can be a problem when leaning the bike is how you turn it and make it through those curves.
Tire types will have different profiles as well. All tires are not the same at all. High traction sport tires will have a taller profile to make those turns much quicker/easier in how they feel. Touring tires will have a flatter profile to give a smother more relaxed ride.
Finally tire size will play in how the profile of a tire will be. Generally improperly sized tires on rims can cause distorted profiles. Similiar to one that is very worn out, you end up with a variable in the transition.
For example, an overly large tire on the rim will make a mushroom shaped profile from the start. See the pic below for a comparison...
The black outline is an of a normal type of tire profile, it's evenly curved for the entire tread.
The red outline is of an oversized tire... you can see how it's flattish at the center, but as it gets closer to the edge, the curvature increases more and more for a suddent drop at the edges.
The green is to reflect the maximum angle that you would lean the bike (about 45 degrees or so) in most cases, and the blue is to show the section of tire on the over sized version that would never be able to be used (put to pavement) because it's curved over and pulled in too far.
That's a more detailed "how do tires effect my ride" type answer.
As for being a new rider, and honestly needing to learn the skills of how to do so well... I strongly suggest you check out some books and vids on the subject. There are some really good vids and books that give great detail on how to ride right and well. There are local riding programs offered in most US states to also give you some of that information. (advanced MSF course for example). "track days" can put you in touch with individuals that can help as well.
Krey
A flatter profile (center has less curvature) will mean that turn ins are "slower" or... you have to actively work on turning the bike more with increased pressure for counter stearing.
A higher profile (center has more curvature) will mean that turn ins are "faster" or... you have to work much less on turning the bike as just slight adjustments will make it want to "fall" into the curve.
Generally a new tire should have an even curvature for the entire tread. As it wears depending on the riding patterns of the user, the profile can change. As has been mentioned for example, the "lots of highway" or straight riding with little leaning will mean that there is alot more wear center of the tire and less on the outter edge. This compounds to make a tire that is very flat in the center, but then has a sudden transition on the outter edges for the curvature of the tire.
For a new rider, a worn tire like this can cause added insecurity when trying to learn to lean the bike. It means you have to give more forceful input to start the lean, but then the bike will suddenly want to "dip" when you get past the worn flat spot. That feeling will make a new rider feel like the bike is wanting to "drop" or fall over, so you tend to avoid leaning the bike. That can be a problem when leaning the bike is how you turn it and make it through those curves.
Tire types will have different profiles as well. All tires are not the same at all. High traction sport tires will have a taller profile to make those turns much quicker/easier in how they feel. Touring tires will have a flatter profile to give a smother more relaxed ride.
Finally tire size will play in how the profile of a tire will be. Generally improperly sized tires on rims can cause distorted profiles. Similiar to one that is very worn out, you end up with a variable in the transition.
For example, an overly large tire on the rim will make a mushroom shaped profile from the start. See the pic below for a comparison...
The black outline is an of a normal type of tire profile, it's evenly curved for the entire tread.
The red outline is of an oversized tire... you can see how it's flattish at the center, but as it gets closer to the edge, the curvature increases more and more for a suddent drop at the edges.
The green is to reflect the maximum angle that you would lean the bike (about 45 degrees or so) in most cases, and the blue is to show the section of tire on the over sized version that would never be able to be used (put to pavement) because it's curved over and pulled in too far.
That's a more detailed "how do tires effect my ride" type answer.
As for being a new rider, and honestly needing to learn the skills of how to do so well... I strongly suggest you check out some books and vids on the subject. There are some really good vids and books that give great detail on how to ride right and well. There are local riding programs offered in most US states to also give you some of that information. (advanced MSF course for example). "track days" can put you in touch with individuals that can help as well.
Krey
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